Reference Standards

Impurities

Pharmaceutical Impurity Reference Standards

Molecraft Life Sciences Pvt Ltd has developed over 300 pharmaceutical impurities and reference standards for analytical method development, validation and regulatory submissions.

Impurities

437 products
Available Acebutolol EP Impurity A structure

Acebutolol EP Impurity A

3'-Acetyl-4'-(2,3-epoxypropoxy)-butyranilide

CAS No.
28197-66-2
M. Formula
C15H19NO4
MW
277.32
Available Acebutolol EP Impurity H structure

Acebutolol EP Impurity H

N,N[(2-Hydroxypropane-1,3-diyl)bis[oxy(3-acetyl-1,4-phenylene)]]dibutanamide

CAS No.
1329613-31-1
M. Formula
C27H34N2O7
MW
498.58
Available EP Impurity B (OR) Acebutolol USP RC B structure

EP Impurity B (OR) Acebutolol USP RC B

N-[3-acetyl-4-[(2RS)-2-hydroxy-3-[(1-methylethyl) amino] propoxy] phenyl] acetamide hydrochloride

CAS No.
73899-76-0
M. Formula
C16H25ClN2O4
MW
344.83
Available EP Impurity C structure

EP Impurity C

N-(3-Acetyl-4-hydroxyphenyl)butanamide

CAS No.
40188-45-2
M. Formula
C12H15NO3
MW
221.25
Available EP Impurity D structure

EP Impurity D

1-[5-Amino-2-[(2RS)-2-hydroxy-3-[(1-methylethyl)amino]propoxy]phenyl]ethanone

CAS No.
57898-80-3
M. Formula
C14H22N2O3
MW
266.34
Available EP Impurity E structure

EP Impurity E

N-[4-[(2RS)-2-Hydroxy-3-[(1-methylethyl)amino]propoxy]phenyl]butanamide hydrochloride

CAS No.
1432053-72-9
M. Formula
C16H27ClN2O3
MW
330.85
Available EP Impurity F structure

EP Impurity F

N-[3-Acetyl-4-[(2RS)-2,3-dihydroxypropoxy] phenyl]butanamide

CAS No.
96480-91-0
M. Formula
C15H21NO5
MW
295.33
Available EP Impurity G structure

EP Impurity G

N,N?-[[(1-Methylethyl)imino]bis[(2-hydroxypropane-1,3-diyl)oxy(3-acetyl-1,4-phenylene)]]dibutanamide

CAS No.
1330165-98-4
M. Formula
C33H47N3O8
MW
613.75
Available EP Impurity I (OR) Acebutolol USP RC I structure

EP Impurity I (OR) Acebutolol USP RC I

N-[3-Acetyl-4-[(2RS)-3-(ethylamino)-2-hydroxypropoxy]phenyl]butanamide

CAS No.
441019-91-6
M. Formula
C17H26N2O4
MW
322.40
Available EP Impurity J structure

EP Impurity J

N-[3-Acetyl-4-[(2RS)-2-hydroxy-3-[(1-methylethyl) amino] propoxy] phenyl] propanamide

CAS No.
28197-36-6
M. Formula
C17H26N2O4
MW
322.40
Available Aceclofenac t-Butyl Ester structure

Aceclofenac t-Butyl Ester

2-(tert-Butoxy)-2-oxoethyl 2-(2-((2,6-dichlorophenyl)amino)phenyl)acetat

CAS No.
139272-68-7
M. Formula
C20H21Cl2NO4
MW
410.29
Available Acetazolamide EP Impurity-G structure

Acetazolamide EP Impurity-G

5-amino-1,3,4-thiadiazole-2-thiol

CAS No.
2349-67-9
M. Formula
C2H2N3S2
MW
133.19
Available EP Impurity A structure

EP Impurity A

[2-[(2,6-Dichlorophenyl)amino]phenyl]acetic acid sodium salt CAS # 15307-79-6 (sodium salt),

CAS No.
15307-86-5
M. Formula
C14H10Cl2NNaO2
MW
318.13
Available EP Impurity B structure

EP Impurity B

Methyl [2-[(2,6-dichlorophenyl)amino]phenyl]acetate

CAS No.
15307-78-5
M. Formula
C15H13Cl2NO2
MW
310.18
Available EP Impurity C structure

EP Impurity C

Ethyl [2-[(2,6-dichlorophenyl)amino]phenyl]acetate

CAS No.
15307-77-4
M. Formula
C16H15Cl2NO2
MW
324.20
Available EP Impurity D structure

EP Impurity D

Methyl [[[2-[(2,6-dichlorophenyl)amino]phenyl] acetyl]oxy]acetate

CAS No.
139272-66-5
M. Formula
C17H15Cl2NO4
MW
368.21
Available EP Impurity E structure

EP Impurity E

Ethyl [[[2-[(2,6-dichlorophenyl) amino] phenyl] acetyl] oxy] acetate

CAS No.
139272-67-6
M. Formula
C18H17Cl2NO4
MW
382.24
Available EP Impurity F structure

EP Impurity F

Benzyl [[[2-[(2,6-dichlorophenyl)amino]phenyl] acetyl]oxy]acetate

CAS No.
100499-89-6
M. Formula
C23H19Cl2NO4
MW
444.31
Available EP Impurity G structure

EP Impurity G

[[[[[2-[(2,6-Dichlorophenyl)amino]phenyl] acetyl]oxy]acetyl]oxy]acetic acid

CAS No.
1215709-75-3
M. Formula
C18H15Cl2NO6
MW
412.22
Available EP Impurity H structure

EP Impurity H

2-(2-(2-(2-(2-((2,6-dichlorophenyl)amino)phenyl)acetoxy)acetoxy)acetoxy)acetic acid

CAS No.
NA
M. Formula
C20H17Cl2NO8
MW
470.26
Available EP Impurity I structure

EP Impurity I

1-(2,6-dichlorophenyl)indolin-2-one

CAS No.
15362-40-0
M. Formula
C14H9Cl2NO
MW
278.13
Available Acemetacin EP Impurity A structure

Acemetacin EP Impurity A

4-Chlorobenzoic acid

CAS No.
74-11-3
M. Formula
C7H5ClO2
MW
156.57
Available Acemetacin EP Impurity F structure

Acemetacin EP Impurity F

[[[[[1-(4-Chlorobenzoyl)-5-methoxy-2-methyl-1H-indol-3-yl]acetyl]oxy]acetyl]oxy]acetic acid

CAS No.
76812-49-2
M. Formula
C23H20ClNO8
MW
473.86
Available EP Impurity B structure

EP Impurity B

[1-(4-Chlorobenzoyl)-5-methoxy-2methylindol-3-yl]acetic acid

CAS No.
53-86-1
M. Formula
C19H16ClNO4
MW
357.79
Available EP Impurity E structure

EP Impurity E

1,1-Dimethylethyl [[[1-(4-Chlorobenzoyl)-5-methoxy-2-methyl-1H-indol-3-yl]acetyl]oxy]acetate

CAS No.
75302-98-6
M. Formula
C25H26ClNO6
MW
471.93
Available Acetazolamide EP Impurity-A structure

Acetazolamide EP Impurity-A

N-(5-chloro-1,3,4-thiadiazol-2-yl)acetamide

CAS No.
60320-32-3
M. Formula
C4H4ClN3OS
MW
177.16
Available EP Impurity-B structure

EP Impurity-B

N-(1,3,4-thiadiazol-2-yl)acetamide

CAS No.
5393-55-5
M. Formula
C4H5N3OS
MW
143.16
Available EP Impurity-C structure

EP Impurity-C

N-(5-mercapto-1,3,4-thiadiazol-2-yl)acetamide

CAS No.
32873-56-6
M. Formula
C4H5N3OS
MW
175.22
Available EP Impurity-D structure

EP Impurity-D

5-amino-1,3,4-thiadiazole-2-sulfonamide

CAS No.
14949-00-9
M. Formula
C2H4N4O2S2
MW
180.20
Available EP Impurity-E structure

EP Impurity-E

5-acetamido-1,3,4-thiadiazole-2-sulfonic acid

CAS No.
827026-60-8
M. Formula
C4H5N3O4S2
MW
223.22
Available EP Impurity-F structure

EP Impurity-F

N-[5-[(5-Acetamido-1,3,4-thiadiazol-2-yl)sulfonyl]sulfamoyl-1,3,4-thiadiazol-2-yl]acetamide

CAS No.
80495-47-2
M. Formula
C8H9N7O6S4
MW
427.44
Available Almotriptan USP RC B (or) Almotriptan EP Impurity D structure

Almotriptan USP RC B (or) Almotriptan EP Impurity D

2-(5-((Pyrrolidin-1-yl-sulfonyl)methyl)-1H-indol-3-yl)ethanamine

CAS No.
181178-24-5
M. Formula
C15H21N3O2S
MW
307.4
Available USP RC C (or) Almotriptan EP Impurity A structure

USP RC C (or) Almotriptan EP Impurity A

N-Methyl-2-(5-[(pyrrolidin-1-yl-sulfonyl)methyl]-1H-indol-3-yl)ethanamine

CAS No.
334981-12-3
M. Formula
C16H23N3O2S
MW
321.44
Available USP RC D (or) Almotriptan EP Impurity E structure

USP RC D (or) Almotriptan EP Impurity E

N,N-dimethyl-2-(5-((pyrrolidin-1-ylsulfonyl)methyl)-1H-indol-3-yl)ethan-1-amine oxide 603137-43-5 (free base),

CAS No.
1391054-49-1
M. Formula
C17H25N3O3S
MW
351.46
Available Argatroban Impurity 2 structure

Argatroban Impurity 2

(S)-2-(3-methylquinoline-8-sulfonamido)-5-(3-nitroguanidino)pentanoic acid

CAS No.
NA
M. Formula
C16H20N6O6S
MW
424.43
Available Argatroban Related Compound A in USP structure

Argatroban Related Compound A in USP

(2R,4R)-4-Methyl-1-((S)-2-(3-methylquinoline-8-sulfonamido)5-(3-nitroguanidino)pentanoyl)piperidine-2-carboxylic acid

CAS No.
74874-10-5
M. Formula
C23H31N7O7S
MW
549.6
Available Argatroban Related Compound C in USP structure

Argatroban Related Compound C in USP

(2R,4R)-1-[N8-amino-N2-(3-methylquinoline-8-sulfonyl)-L-arginyl]-4-methylpiperidine-2carboxylic acid

CAS No.
NA
M. Formula
C23H37N7O5S
MW
523.65
Available Dehydroargatroban structure

Dehydroargatroban

(2R,4R)-4-Methyl-1-(((3-methylquinolin-8-yl)sulfonyl)-L-arginyl)piperidine-2-carboxylic acid

CAS No.
951130-92-0
M. Formula
C23H32N6O5S
MW
504.6
Available Impurity 1 structure

Impurity 1

(2R,4R)-4-methyl-1-((2S)-2-((3-methyl-1,2,3,4-tetrahydroquinoline)-8-sulfonamido)-5-ureidopentanoyl)piperidine-2-carboxylic acid

CAS No.
2423016-01-5
M. Formula
C23H35N5O6S
MW
509.62
Available Impurity 3 structure

Impurity 3

(2R,4R)-4-methyl-1-(N2-((3-methyl-1,2,3,4-tetrahydroquinolin-8-yl)sulfonyl)-Nw-nitro-L-arginyl)piperidine-2-carboxylic acid

CAS No.
NA
M. Formula
C23H35N7O7S
MW
553.64
Available Impurity 4 structure

Impurity 4

Ethyl(2R,4R)-4-methylpiperidine-2-carboxylate

CAS No.
74892-82-3
M. Formula
C9H17NO2
MW
171.2
Available Impurity 5 structure

Impurity 5

(2R,4R)-4-methylpiperidine-2-carboxylic acid

CAS No.
74892-81-2
M. Formula
C7H13NO
MW
143.19
Available Impurity 6 structure

Impurity 6

3-Methylquinoline-8-sulfonic acid

CAS No.
153886-69-2
M. Formula
C10H9NO3S
MW
223.2
Available Aripiprazole EP Impurity A structure

Aripiprazole EP Impurity A

7-hydroxy-3,4-dihydroquinolin-2(1H)-one

CAS No.
22246-18-0
M. Formula
C9H9NO2
MW
163.18
Available Aripiprazole N,N-Dioxide structure

Aripiprazole N,N-Dioxide

1-(2,3-dichlorophenyl)-4-(4-((2-oxo-1,2,3,4-tetrahydroquinolin-7-yl)oxy)butyl)piperazine 1,4-dioxide

CAS No.
573691-13-1
M. Formula
C23H27Cl2N3O4
MW
480.38
Available EP Impurity B & USP Related Compound C structure

EP Impurity B & USP Related Compound C

1-(2,3-dichlorophenyl)piperazine

CAS No.
41202-77-1
M. Formula
C10H12Cl2N2
MW
231.12
Available EP Impurity C structure

EP Impurity C

7-(4-(4-(2-chlorophenyl)piperazin-1-yl)butoxy)-3,4-dihydroquinolin-2(1H)-one

CAS No.
203395-81-7
M. Formula
C23H28ClN3O2
MW
413.95
Available EP Impurity D structure

EP Impurity D

7-(4-(4-(3-chlorophenyl)piperazin-1-yl)butoxy)-3,4-dihydroquinolin-2(1H)-one

CAS No.
203395-82-8
M. Formula
C23H28ClN3O2
MW
413.95
Available EP Impurity E &USP RC G structure

EP Impurity E &USP RC G

7-(4-(4-(2,3-dichlorophenyl)piperazin-1-yl)butoxy)quinolin-2(1H)-one

CAS No.
129722-25-4
M. Formula
C23H25Cl2N3O2
MW
446.37
Available EP Impurity F structure

EP Impurity F

4-(2,3-dichlorophenyl)-1-(4-((2-oxo-1,2,3,4-tetrahydroquinolin-7-yl)oxy)butyl)piperazine 1-oxide

CAS No.
573691-09-5
M. Formula
C23H27Cl2N3O3
MW
464.38
Available USP Related Compound H structure

USP Related Compound H

7-(4-{4-[4-(2,3-Dichlorophenyl)piperazin-1-yl]butoxy}butoxy)-3,4-dihydro quinolin-2(1H)-one

CAS No.
1796928-63-6
M. Formula
C27H35Cl2N3O3
MW
520.50
Available Chloromethyl laurate structure

Chloromethyl laurate

Chloromethyl dodecanoate

CAS No.
61413-67-0
M. Formula
C13H25ClO2
MW
248.79
Available methylene didodecanoate structure

methylene didodecanoate

Methylene didodecanoate

CAS No.
1261134-88-6
M. Formula
C25H48O4
MW
412.65
Available Bacitracin EP Impurity F structure

Bacitracin EP Impurity F

4,10-anhydro[N-[[2-[(2S)-2-methyl-1-oxobutyl]-1,3-thiazol-4-yl]carbonyl]-L-leucyl-D-?-glutamyl-L-isoleucyl-L-lysyl-D-ornithyl-L-isoleucyl-D-phenylalanyl-L-histidyl-D-?-aspartyl-L-asparagine]

CAS No.
22601-63-4
M. Formula
C66H98N16O17S
MW
NA
Available Bacitracin EP Impurity M structure

Bacitracin EP Impurity M

4,10-anhydro[N-[[2-[(1S,2S)-1-amino-2-methylbutyl]-1,3-thiazol-4-yl]carbonyl]-L-leucyl-D-?-glutamyl-L-isoleucyl-L-lysyl-D-ornithyl-L-isoleucyl-D-phenylalanyl-L-histidyl-D-?-aspartyl-L-asparagine]

CAS No.
NA
M. Formula
C66H101N17O16S
MW
1420.7
Available EP Impurity X structure

EP Impurity X

4,10-anhydro[N-[[2-[(1S,2S)-1-amino-2-methylbutyl]-1,3-thiazol-4-yl]carbonyl]-L-leucyl-D-?-glutamyl-L-isoleucyl-L-lysyl-D-ornithyl-L-isoleucyl-D-phenylalanyl-L-histidyl-D-?-aspartyl-L-asparagine]

CAS No.
NA
M. Formula
C66H103N17O16S
MW
1422.71
Available Bambuterol EP Impurity B structure

Bambuterol EP Impurity B

5-(1,2-dihydroxyethyl)-1,3-phenylene bis(dimethylcarbamate)

CAS No.
112935-92-9
M. Formula
C14H20N2O6
MW
312.32
Available Bambuterol EP Impurity E structure

Bambuterol EP Impurity E

5-acetyl-1,3-phenylene bis(dimethylcarbamate)

CAS No.
81732-48-1
M. Formula
C14H18N2O5
MW
294.3
Available EP Impurity C structure

EP Impurity C

3-[(1RS)-2-[(1,1-Dimethylethyl)amino]-1-hydroxyethyl]-5-hydroxyphenyl dimethylcarbamate hydrochloride 81732-52-7 (HCl)�,

CAS No.
81732-67-4
M. Formula
C15H25ClN2O4
MW
332.82
Available EP Impurity D structure

EP Impurity D

5-(1-hydroxyethyl)-1,3-phenylene bis(dimethylcarbamate)

CAS No.
112935-93-0
M. Formula
C14H20N2O5
MW
296.32
Available EP Impurity F structure

EP Impurity F

5-[[(1,1-Dimethylethyl)amino]acetyl]-1,3-phenylenebis(dimethylcarbamate) hydrochloride 112935-94-1 (Base),

CAS No.
2153431-91-3
M. Formula
C18H28ClN3O5
MW
401.89
Available Bendamustine USP RC A structure

Bendamustine USP RC A

4-[5-[Bis(2-hydroxyethyl)amino]-1-methylbenzimidazol-2-yl]butanoic acid HCl

CAS No.
109882-29-3
M. Formula
C16H24ClN3O4
MW
357.83
Available USP RC B structure

USP RC B

4-(1-Methyl-5-morpholino-1H -benzimidazol-2-yl)butanoic acid

CAS No.
1228552-02-0
M. Formula
C16H21N3O3
MW
303.36
Available USP RC B Ethyl Ester structure

USP RC B Ethyl Ester

ethyl4-(1-methyl-6-morpholino-1H-benzo[d]imidazol-2-yl)butanoate

CAS No.
NA
M. Formula
C18H25N3O3
MW
331.41
Available USP RC C structure

USP RC C

4-(5-(Bis(2-hydroxyethyl)amino)-1-methyl-1H-benzo[d]imidazol-2-yl)butanoic acid ethyl ester

CAS No.
3543-74-6
M. Formula
C18H27N3O4
MW
349.42
Available USP RC D structure

USP RC D

4-(5-((2-Chloroethyl)amino)-1-methyl-1H-benzo[d]imidazol-2-yl)butanoic acid HCl

CAS No.
1797881-48-1
M. Formula
C14H19Cl2N3O2
MW
332.23
Available USP RC E structure

USP RC E

5-[(2-Chloroethyl)(2-hydroxyethyl)amino]-1-methyl-1H-benzimidazole-2-butanoic acid hydrochloride

CAS No.
109882-27-1
M. Formula
C16H23Cl2N3O3
MW
376.28
Available USP RC F structure

USP RC F

(2R,3R,4R,5R)-2,3,4,5,6-Pentahydroxyhexyl 4-(5-(bis(2-Chloroethyl)amino)-1-methyl-1H-benzo[d]imidazol-2-yl)butanoate

CAS No.
1869075-89-7
M. Formula
C22H33Cl2N3O7
MW
522.42
Available USP RC H structure

USP RC H

4-(5-((2-((4-(5-(bis(2-chloroethyl)amino)-1-methyl-1H-benzo[d]imidazol-2-yl)butanoyl)oxy)ethyl)(2-chloroethyl)amino)-1-methyl-1H-benzo[d]imidazol-2-yl)butanoic acid

CAS No.
1228551-91-4
M. Formula
C32H41Cl3N6O4
MW
680.06
Available USP RC I structure

USP RC I

4-[5-[Bis(2-chloroethyl)amino]-1-methylbenzimidazol-2-yl]butanoic acid ethyl ester hydrochloride

CAS No.
87475-54-5
M. Formula
C18H26Cl3N3O2
MW
422.78
Available Bortezomib Acid Impurity& Bortezomib USP Impurity D structure

Bortezomib Acid Impurity& Bortezomib USP Impurity D

(2S)-3-Phenyl-2-[(pyrazin-2-ylcarbonyl)amino]propanoic acid

CAS No.
114457-94-2
M. Formula
C14H13N3O3
MW
271.27
Available Bortezomib Hydroxy (1S, 2R)-Isomer structure

Bortezomib Hydroxy (1S, 2R)-Isomer

N-[(2R)-1-{[(1S)-1-Hydroxy-3-methylbutyl]amino}-1-oxo-3-phenylpropan-2-yl]pyrazine-2-carboxamide

CAS No.
NA
M. Formula
C19H24N4O3
MW
356.42
Available Bortezomib Hydroxy (1S, 2R)-Isomer structure

Bortezomib Hydroxy (1S, 2R)-Isomer

N-[(2R)-1-{[(1S)-1-Hydroxy-3-methylbutyl]amino}-1-oxo-3-phenylpropan-2-yl]pyrazine-2-carboxamide

CAS No.
NA
M. Formula
C19H24N4O3
MW
356.42
Available Bortezomib Pinanediol Impurity structure

Bortezomib Pinanediol Impurity

N-[(1S)-2-[[(1R)-1-[(3aS,4S,6S,7aR)-Hexahydro-3a,5,5-trimethyl-4,6-methano-1,3,2-benzodioxaborol-2-yl]-3-methylbutyl]amino]-2-oxo-1-(phenylmethyl)ethyl]-2-pyrazinecarboxamide

CAS No.
205393-22-2
M. Formula
C29H39BN4O4
MW
518.47
Available Bortezomib USP Impurity B & Bortezomib Amide Analog structure

Bortezomib USP Impurity B & Bortezomib Amide Analog

(2S)-3-Phenyl-2-[(pyrazin-2-ylcarbonyl)amino]propanamide

CAS No.
289472-80-6
M. Formula
C14H14N4O2
MW
270.29
Available Bortezomib USP Impurity H structure

Bortezomib USP Impurity H

((R)-3-methyl-1-((R)-3-phenyl-2-(pyrazine-2-carboxamido)propanamido)butyl)boronic acid

CAS No.
1132709-15-9
M. Formula
C19H25BN4O4
MW
384.24
Available Enantiomer structure

Enantiomer

((S)-3-methyl-1-((R)-3-phenyl-2-(pyrazine-2-carboxamido)propanamido)butyl)boronic acid

CAS No.
1132709-16-0
M. Formula
C19H25BN4O4
MW
384.24
Available USP Impurity G structure

USP Impurity G

[(1S)-3-Methyl-1-({(2S)-3-phenyl-2-[(pyrazin-2-ylcarbonyl)amino]propanoyl} amino)butyl]boronic acid

CAS No.
1132709-14-8
M. Formula
C19H25BN4O4
MW
384.24
Available EP impurity A structure

EP impurity A

N-(Imidazolidin-2-ylidene)quinoxalin-6-amine

CAS No.
91147-43-2
M. Formula
C11H11N5
MW
213.2
Available EP impurity B structure

EP impurity B

6-Amino-5-bromoquinoxaline

CAS No.
50358-63-9
M. Formula
C8H6BrN3
MW
224.1
Available EP impurity G structure

EP impurity G

1-(2-Aminoethyl)-3-(5-bromoquinoxalin-6-yl)urea trifluoroacetic acid salt

CAS No.
1391054-10-6
M. Formula
C13H13BrF3N5O3
MW
NA
Available �424.1 Brimonidine RRT impurity structure

�424.1 Brimonidine RRT impurity

9,10-dihydro-7H-imidazo[2',1':2,3]imidazo[4,5-f]quinoxaline

CAS No.
NA
M. Formula
C11H9N5
MW
211.23
Available Brivaracetam (alfa R, 4R)-Isomer structure

Brivaracetam (alfa R, 4R)-Isomer

�(?R,4R)-?-Ethyl-2-oxo-4-propyl-1-pyrrolidineacetamide

CAS No.
357337-00-9
M. Formula
C11H20N2O2
MW
212.3
Available Brivaracetam (alfaR, 4S)-Isomer structure

Brivaracetam (alfaR, 4S)-Isomer

(?R,4S)-?-Ethyl-2-oxo-4-propyl-1-pyrrolidineacetamide

CAS No.
357336-99-3
M. Formula
C11H20N2O2
MW
212.3
Available Brivaracetam (alfaS, 4S)-Isomer structure

Brivaracetam (alfaS, 4S)-Isomer

(?S,4S)-?-Ethyl-2-oxo-4-propyl-1-pyrrolidineacetamide

CAS No.
357336-19-7
M. Formula
C11H20N2O2
MW
212.3
Available Bupivacaine EP Impurity A structure

Bupivacaine EP Impurity A

N-(2,6-Dimethylphenyl)pyridine-2-carboxamide

CAS No.
39627-98-0
M. Formula
C14H14N2O
MW
226.27
Available Bupivacaine EP Impurity F structure

Bupivacaine EP Impurity F

2,6-Dimethylaniline HCl

CAS No.
21436-98-6
M. Formula
C8H12ClN
MW
157.64
Available EP Impurity B structure

EP Impurity B

(2RS)-N-(2,6-Dimethylphenyl)piperidine-2-carboxamide 15883-20-2 (Base),

CAS No.
65797-42-4
M. Formula
C14H20N2O
MW
232.32
Available EP Impurity C structure

EP Impurity C

1-(2,6-Dimethylphenyl)-1,5,6,7-tetrahydro-2H-azepin-2-one

CAS No.
1797894-80-4
M. Formula
C14H17NO
MW
215.29
Available EP Impurity D structure

EP Impurity D

(2RS)-2,6-Dichloro-N-(2,6-dimethylphenyl)hexanamide

CAS No.
1037184-07-8
M. Formula
C14H19Cl2NO
MW
288.21
Available EP Impurity E structure

EP Impurity E

6-(Butylamino)-N-(2,6-dimethylphenyl)hexanamide

CAS No.
1330172-81-0
M. Formula
C18H30N2O
MW
290.44
Available N-Oxide HCl structure

N-Oxide HCl

1-Butyl-1-oxido-N-(2,6-dimethylphenyl)-2-piperidinecarboxamide hydrochloride 1796927-05-3 (HCl),

CAS No.
1346597-81-6
M. Formula
C18H29ClN2O2
MW
340.89
Available Cangrelor impurity-1 structure

Cangrelor impurity-1

(2R,3R,4S,5R)-2-(6-amino-2-((3,3,3-trifluoropropyl)thio)-9H-purin-9-yl)-5-(hydroxymethyl)tetrahydrofuran-3,4-diol

CAS No.
163706-51-2
M. Formula
C13H16F3N5O4S
MW
395.36
Available Cangrelor impurity-4 structure

Cangrelor impurity-4

(2R,3R,4R,5R)-2-(acetoxymethyl)-5-(6-((2-(methylthio)ethyl)amino)-2-((3,3,3-trifluoropropyl)thio)-9H-purin-9-yl)tetrahydrofuran-3,4-diyl diacetate

CAS No.
NA
M. Formula
C22H28F3N5O7S2
MW
595.61
Available Cangrelor impurity-7 structure

Cangrelor impurity-7

(2R,3S,4R,5R)-2-(hydroxymethyl)-5-(6-((2-(methylsulfinyl)ethyl)amino)-2-((3,3,3-trifluoropropyl)thio)-9H-purin-9-yl)tetrahydrofuran-3,4-diol

CAS No.
NA
M. Formula
C16H22F3N5O5S2
MW
485.50
Available impurity-2 structure

impurity-2

(2R,3R,4R,5R)-2-(6-acetamido-2-((3,3,3-trifluoropropyl)thio)-9H-purin-9-yl)-5-(acetoxymethyl)tetrahydrofuran-3,4-diyl diacetate

CAS No.
163706-52-3
M. Formula
C21H24F3N5O8S
MW
563.51
Available impurity-5 structure

impurity-5

N-(2-(methylthio)ethyl)-2-((3,3,3-trifluoropropyl)thio)-9H-purin-6-amine

CAS No.
1830294-25-1
M. Formula
C11H14F3N5S2
MW
337.4
Available impurity-9 structure

impurity-9

N-(2-(methylsulfinyl)ethyl)-2-((3,3,3-trifluoropropyl)thio)-9H-purin-6-amine

CAS No.
NA
M. Formula
C11H14F3N5OS2
MW
353.38
Available S-S Dimer impurity structure

S-S Dimer impurity

2,2'-disulfanediylbis(N-(2-(methylthio)ethyl)-9H-purin-6-amine)

CAS No.
NA
M. Formula
C16H20N10S4
MW
480.65
Available Caspofungin impurity-D structure

Caspofungin impurity-D

�(2R,4R)-N-((2S,3R)-1-((2S,4R)-2-(((2S,3S,4S)-1-(((2S,3R)-5-Amino-1-((2S,3S)-2-carbamoyl-3-hydroxypyrrolidin-1-yl)-3-hydroxy-1-oxopentan-2-yl)amino)-3,4-dihydroxy-4-(4-hydroxyphenyl)-1-oxobutan-2-yl)carbamoyl)-4-hydroxypyrrolidin-1-yl)-3-hydroxy-1-oxobutan-2-yl)-1-(10,12-dimethyltetradecanoyl)-4,5-dihydroxypyrrolidine-2-carboxamide

CAS No.
314080-31-4
M. Formula
C50H82N8O16
MW
1051.2
Available Caspofungin Phenylthio Amide Impurity (or) Pneumocandin B0 Phenylthio Analog structure

Caspofungin Phenylthio Amide Impurity (or) Pneumocandin B0 Phenylthio Analog

(3S)-(4R,5R)-N2-[(10R,12S)-10,12-Dimethyl-1-oxotetradecyl]- 4-hydroxy-5-phenylthio-L-ornithyl-L-threonyl-(4R)-4-hydroxy-L-prolyl-(4S)-4-hydroxy-4-(4-hydroxyphenyl)-L-threonyl-(3R)-3-hydroxy-L-glutaminyl-3-hydroxy-L-proline (6?1)-lactam

CAS No.
198706-35-3
M. Formula
C56H84N8O16S
MW
1157.38
Available Caspofungin Phenylthio Amine Impurity (or) Pneumocandin B0 Deoxy Phenylthio Analog structure

Caspofungin Phenylthio Amine Impurity (or) Pneumocandin B0 Deoxy Phenylthio Analog

(3S,6S,9S,11R,15S,18S,20R,21S,24S,25S)-21-Phenylthio-3-[3-amino-1(R)-hydroxypropyl]-6-[1(S),2(S)-dihydroxy-2-(4-hydroxyphenyl)ethyl]-18-(10,12-dimethyltetradecanamido)-11,20,25-trihydroxy-15-[1(R)-hydroxy ethyl]-1,4,7,13,16,22-hexaazatricyclo[22.3.0.0(9,13)]heptacosane-2,5,8,14,17,23-hexaone 935837-48-2 (base)

CAS No.
935739-50-7
M. Formula
C56H86N8O15S
MW
1143.39
Available Chlorpromazine Dimer impurity structure

Chlorpromazine Dimer impurity

3,3'-(8'-chloro-10H,10'H-[2,3'-biphenothiazine]-10,10'-diyl)bis(N,N-dimethylpropan-1-amine)

CAS No.
NA
M. Formula
C34H37ClN4S2
MW
601.27
Available Chlorpromazine EP Impurity A structure

Chlorpromazine EP Impurity A

3-(2-Chloro-10H-phenothiazin-10-yl)-N,N-dimethylpropan-1-amine S-oxide

CAS No.
969-99-3
M. Formula
C17H19ClN2OS
MW
334.86
Available Chlorpromazine EP Impurity C structure

Chlorpromazine EP Impurity C

N,N-Dimethyl-10H-phenothiazine-10-propanamine hydrochloride 53-60-1 (HCl)

CAS No.
58-40-2
M. Formula
C17H21ClN2S
MW
320.88
Available Chlorpromazine EP Impurity D structure

Chlorpromazine EP Impurity D

2-Chloro-N-methyl-10H-phenothiazine-10-propanamine hydrochloride 3953-65-9 (HCl)

CAS No.
1225-64-5
M. Formula
C16H18Cl2N2S
MW
341.3
Available Chlorpromazine EP Impurity E structure

Chlorpromazine EP Impurity E

2-Chloro-10H-phenothiazine

CAS No.
92-39-7
M. Formula
C12H8ClNS
MW
233.72
Available Chlorpromazine Impurity G structure

Chlorpromazine Impurity G

2-Chloro-N-ethyl-N-methyl-10H-phenothiazine-10-propanamine

CAS No.
1622313-77-2
M. Formula
C18H21ClN2S
MW
332.89
Available Chlorpromazine N-Oxide structure

Chlorpromazine N-Oxide

3-(2-Chloro-10H-phenothiazin-10-yl)-N,N-dimethylpropan1-amine N-oxide

CAS No.
1672-76-0
M. Formula
C17H19ClN2OS
MW
334.86
Available Chlorpromazine N-Oxide Sulfoxide structure

Chlorpromazine N-Oxide Sulfoxide

3-(2-Chloro-10H-phenothiazin-10-yl)-N,N-dimethylpropan-1-amine N-oxide S-oxide

CAS No.
10404-90-7
M. Formula
C17H19ClN2O2S
MW
350.86
Available Chlorpromazine Sulfone structure

Chlorpromazine Sulfone

2-Chloro-N,N-dimethyl-10H-phenothiazine-10-propanamine 5,5-dioxide hydrochloride 18683-73-3 (HCl)

CAS No.
4337-86-4
M. Formula
C17H20Cl2N2O2S
MW
387.32
Available Chlorpromazine Trimer impurity structure

Chlorpromazine Trimer impurity

3,3',3''-(8''-chloro-10H,10'H,10''H-[2,3':8',3''-terphenothiazine]-10,10',10''-triyl)tris(N,N-dimethylpropan-1-amine)

CAS No.
NA
M. Formula
C51H55ClN6S3
MW
883.67
Available Cinnarizine EP Impurity A structure

Cinnarizine EP Impurity A

1-(Diphenylmethyl)piperazine

CAS No.
841-77-0
M. Formula
C17H20N2
MW
252.35
Available EP Impurity D structure

EP Impurity D

1-(Diphenylmethyl)-4-[(1RS,3E)-4-phenyl-1-[(E)-2-phenylethenyl]but-3-enyl]piperazin

CAS No.
1199751-98-8
M. Formula
C35H36N24
MW
84.67
Available EP Impurity E structure

EP Impurity E

1,4-bis-(Diphenylmethyl)piperazine

CAS No.
216581-01-0
M. Formula
C30H30N2
MW
418.57
Available (R)-Laudanosine structure

(R)-Laudanosine

(R)-1-(3,4-dimethoxybenzyl)-6,7-dimethoxy-2-methyl-1,2,3,4-tetrahydroisoquinoline

CAS No.
85-63-2
M. Formula
C21H27NO4
MW
357.45
Available (R)-N-Methyl laudanosine structure

(R)-N-Methyl laudanosine

(R)-1-(3,4-dimethoxybenzyl)-6,7-dimethoxy-2,2-dimethyl-1,2,3,4-tetrahydroisoquinolin-2-ium benzenesulfonate

CAS No.
2480467-84-1
M. Formula
C28H35NO7S
MW
529.65
Available 1,5-Pentane diol diacrylae structure

1,5-Pentane diol diacrylae

pentane-1,5-diyl diacrylate

CAS No.
36840-85-4
M. Formula
C11H16O4
MW
212.25
Available 5-hydroxypentyl acrylate structure

5-hydroxypentyl acrylate

5-hydroxypentyl acrylate �

CAS No.
57198-94-4
M. Formula
C8H14O3
MW
158.20
Available Cis-Cis-Triester analog (Or) EP Impurity L structure

Cis-Cis-Triester analog (Or) EP Impurity L

(1R,2R)-1-(3,4-dimethoxybenzyl)-2-(3-(3-((5-((3-((1R,2R)-1-(3,4-dimethoxybenzyl)-6,7-dimethoxy-2-methyl-1,2,3,4-tetrahydroisoquinolin-2-ium-2-yl)propanoyl)oxy)pentyl)oxy)-3-oxopropoxy)-3-oxopropyl)-6,7-dimethoxy-2-methyl-1,2,3,4-tetrahydroisoquinolin-2-ium di-benzenesulfonate

CAS No.
NA
M. Formula
C68H86N2O20S2
MW
1315.55
Available Cis-Monacrylate (Or) EP Impurity O structure

Cis-Monacrylate (Or) EP Impurity O

(1R,2R)-2-(3-((5-(acryloyloxy)pentyl)oxy)-3-oxopropyl)-1-(3,4-dimethoxybenzyl)-6,7-dimethoxy-2-methyl-1,2,3,4-tetrahydroisoquinolin-2-ium benzenesulfonate

CAS No.
155913-31-8
M. Formula
C38H49NO11S
MW
727.87
Available Cis-Monoquaternary compound structure

Cis-Monoquaternary compound

(1R,2R)-1-(3,4-dimethoxybenzyl)-2-(3-((5-((3-((1R)-1-(3,4-dimethoxybenzyl)-6,7-dimethoxy-1,2,3,4-tetrahydroisoquinolin-2-ium-2-yl)propanoyl)oxy)pentyl)oxy)-3-oxopropyl)-6,7-dimethoxy-2-methyl-1,2,3,4-tetrahydroisoquinolin-2-ium

CAS No.
NA
M. Formula
C58H75N2O15S
MW
1072.30
Available Cis-Quaternary acid structure

Cis-Quaternary acid

(1R,2R)-2-(2-carboxyethyl)-1-(3,4-dimethoxybenzyl)-6,7-dimethoxy-2-methyl-1,2,3,4-tetrahydroisoquinolin-2-ium benzenesulfonate

CAS No.
1075727-06-8
M. Formula
C30H37NO9S
MW
587.68
Available Cis-Quaternary Alcohol (Or) EP Impurity F structure

Cis-Quaternary Alcohol (Or) EP Impurity F

(1R,2R)-1-(3,4-dimethoxybenzyl)-2-(3-((5-hydroxypentyl)oxy)-3-oxopropyl)-6,7-dimethoxy-2-methyl-1,2,3,4-tetrahydroisoquinolin-2-ium

CAS No.
1100676-16-1
M. Formula
C35H47NO10S
MW
673.82
Available Cis-Quaternary Methyl ester (Or) EP Impurity D structure

Cis-Quaternary Methyl ester (Or) EP Impurity D

(1R,2R)-1-(3,4-dimethoxybenzyl)-6,7-dimethoxy-2-(3-methoxy-3-oxopropyl)-2-methyl-1,2,3,4-tetrahydroisoquinolin-2-ium benzenesulfonate

CAS No.
1075726-88-3
M. Formula
C31H39NO9S
MW
601.71
Available EP impurity-W structure

EP impurity-W

(1R,2R)-2-(3-((5-acetoxypentyl)oxy)-3-oxopropyl)-1-(3,4-dimethoxybenzyl)-6,7-dimethoxy-2-methyl-1,2,3,4-tetrahydroisoquinolin-2-ium benzenesulfonate

CAS No.
2411761-86-7
M. Formula
C37H49NO11S
MW
715.86
Available R-cis-R�-trans atracurium structure

R-cis-R�-trans atracurium

(1R,2S)-1-(3,4-dimethoxybenzyl)-2-(3-((5-((3-((1R,2R)-1-(3,4-dimethoxybenzyl)-6,7-dimethoxy-2-methyl-1,2,3,4-tetrahydroisoquinolin-2-ium-2-yl)propanoyl)oxy)pentyl)oxy)-3-oxopropyl)-6,7-dimethoxy-2-methyl-1,2,3,4-tetrahydroisoquinolin-2-ium di-benzenesulfonate

CAS No.
NA
M. Formula
C65H82N2O18S2
MW
1243.49
Available R-trans-R�-trans atracurium structure

R-trans-R�-trans atracurium

(1R,1'R,2S,2'S)-2,2'-((pentane-1,5-diylbis(oxy))bis(3-oxopropane-3,1-diyl))bis(1-(3,4-dimethoxybenzyl)-6,7-dimethoxy-2-methyl-1,2,3,4-tetrahydroisoquinolin-2-ium) benzenesulfonate

CAS No.
NA
M. Formula
C65H82N2O18S2
MW
1243.49
Available Trans-Monacrylate (Or) EP Impurity N structure

Trans-Monacrylate (Or) EP Impurity N

(1R,2S)-2-(3-((5-(acryloyloxy)pentyl)oxy)-3-oxopropyl)-1-(3,4-dimethoxybenzyl)-6,7-dimethoxy-2-methyl-1,2,3,4-tetrahydroisoquinolin-2-ium benzenesulfonate

CAS No.
NA
M. Formula
C38H49NO11S
MW
727.87
Available Trans-Monoquaternary compound structure

Trans-Monoquaternary compound

mono((1R,2S)-1-(3,4-dimethoxybenzyl)-2-(3-((5-((3-((1R)-1-(3,4-dimethoxybenzyl)-6,7-dimethoxy-1,2,3,4-tetrahydroisoquinolin-2-ium-2-yl)propanoyl)oxy)pentyl)oxy)-3-oxopropyl)-6,7-dimethoxy-2-methyl-1,2,3,4-tetrahydroisoquinolin-2-ium) monobenzenesulfonate

CAS No.
NA
M. Formula
C58H75N2O15S
MW
1072.30
Available Dexamethasone Ethyl ester impurity structure

Dexamethasone Ethyl ester impurity

ethyl (8S,9R,10S,11S,13S,14S,16R,17R)-9-fluoro-11,17-dihydroxy-10,13,16-trimethyl-3-oxo-6,7,8,9,10,11,12,13,14,15,16,17-dodecahydro-3H-cyclopenta[a]phenanthrene-17-carboxylate

CAS No.
NA
M. Formula
C23H31FO5
MW
406.49
Available EP Impurity A structure

EP Impurity A

9-Fluoro-11?,17,21-trihydroxy-16?-methylpregna-1,4-diene-3,20-dione

CAS No.
50-02-2
M. Formula
C22H29FO5
MW
392.46
Available EP Impurity G structure

EP Impurity G

9-Fluoro-11?,17-dihydroxy-16?-methyl-3-oxoandrosta-1,4-diene-17?-carboxylic acid

CAS No.
37927-01-8
M. Formula
C21H27FO5
MW
378.43
Available Impurity 1 structure

Impurity 1

sodium 2-((8S,9R,10S,11S,13S,14S,16R,17S)-9-fluoro-11-hydroxy-10,13,16-trimethyl-3-oxo-6,7,8,9,10,11,12,13,14,15,16,17-dodecahydro-3H-cyclopenta[a]phenanthren-17-yl)-2-oxoethyl phosphate

CAS No.
NA
M. Formula
C22H28FNa2O7P
MW
500.41
Available Dexrazoxane bis-N- structure

Dexrazoxane bis-N-

Oxide (S)-1,1'-(propane-1,2-diyl)bis(3,5-dioxopiperazine 1-oxide)

CAS No.
NA
M. Formula
C11H16N4O6
MW
300.27
Available Dexrazoxane RC 2 structure

Dexrazoxane RC 2

(Diacid) (S)-2,2'-(Propane-1,2-diylbis((2-amino-2-oxoethyl)azanediyl))diacetic acid

CAS No.
75459-34-6
M. Formula
C11H20N4O6
MW
304.3
Available Diazepam EP Impurity A structure

Diazepam EP Impurity A

7-Chloro-5-phenyl-1,3-dihydro-2H-1,4-benzodiazepin-2-one

CAS No.
1088-11-5
M. Formula
C15H11ClN2O
MW
270.7
Available Diazepam EP Impurity D structure

Diazepam EP Impurity D

[5-Chloro-2-(methylamino)phenyl]phenylmethanone

CAS No.
1022-13-5
M. Formula
C14H12ClNO
MW
245.7
Available EP Impurity B structure

EP Impurity B

N-(2-benzoyl-4-chlorophenyl)-2-chloro-N-methylacetamide

CAS No.
6021-21-2
M. Formula
C16H13Cl2NO2
MW
322.2
Available EP Impurity E structure

EP Impurity E

6-Chloro-1-methyl-4-phenylquinazolin-2(1H)-one

CAS No.
20927-53-1
M. Formula
C15H11ClN2O
MW
270.7
Available Diphenhydramine EP impurity A structure

Diphenhydramine EP impurity A

2-(diphenylmethoxy)-N-methylethanamin hydrochloride

CAS No.
53499-40-4
M. Formula
C16H20ClNO
MW
277.79
Available EP impurity D structure

EP impurity D

diphenylmethanol

CAS No.
91-01-0
M. Formula
C13H12O
MW
184.2
Available EP impurity E structure

EP impurity E

diphenylmethanone

CAS No.
119-61-9
M. Formula
C13H10O
MW
182.2
Available EP impurity K structure

EP impurity K

(oxybis(methanetriyl))tetrabenzene

CAS No.
574-42-5
M. Formula
C26H22O
MW
350.5
Available Doxycycline EP Impurity A (OR) USP RC A , structure

Doxycycline EP Impurity A (OR) USP RC A ,

6-Epi Doxycycline (4S,4aR,5S,5aR,6S,12aS)-4-(dimethylamino)-3,5,10,12,12a-pentahydroxy-6-methyl-1,11-dioxo-1,4,4a,5,5a,6,11,12a-octahydrotetracene-2-carboxamide 3219-99-6 (base)

CAS No.
41411-66-9
M. Formula
C22H24N2O8
MW
444.44
Available EP Impurity B structure

EP Impurity B

(4S,4aR,5S,5aR,12aS)-4-(Dimethylamino)-3,5,10,12,12a-pentahydroxy-6-methylene-1,11-dioxo-1,4,4a,5,5a,6,11,12a-octahydrotetracene-2-carboxamide HCl

CAS No.
3963-95-9
M. Formula
C22H23ClN2O8
MW
478.88
Available EP Impurity C (OR) structure

EP Impurity C (OR)

4-Epi Doxycycline (4R,4aR,5S,5aR,6R,12aS)-4-(Dimethylamino)-3,5,10,12,12a-pentahydroxy-6-methyl-1,11-dioxo-1,4,4a,5,5a,6,11,12a-octahydrotetracene-2-carboxamide

CAS No.
6543-77-7
M. Formula
C22H24N2O8
MW
444.44
Available EP Impurity E structure

EP Impurity E

(4S,4aR,5S,5aR,6S,12aS) -4-(dimethylamino)-3,5,6,10,11,12a-hexahydroxy -6-methyl-1,12-dioxo-1,4,4a,5,5a,6,12,12a-octahydrotetracene -2-carboxamide

CAS No.
79-57-2
M. Formula
C22H24N2O9
MW
460.44
Available Impurity 1 structure

Impurity 1

(1S,4aR,5aS,11R,11aR,12R,12aR)-5a-chloro-1-(dimethylamino)-2,4a,5,7,12-pentahydroxy-11-methyl-4,6-dioxo-1,4,4a,5,5a,6,11,11a,12,12a-decahydro-5,11-epoxytetracene-3-carboxamide

CAS No.
NA
M. Formula
C22H23ClN2O9
MW
494.88
Available Impurity 2 structure

Impurity 2

(4S,4aR,5R,5aS,11aS,12aR)-11a-chloro-4-(dimethylamino)-3,5,10,12a-tetrahydroxy-6-methylene-1,11,12-trioxo-1,4,4a,5,5a,6,11,11a,12,12a-decahydrotetracene-2-carboxamide 4-methylbenzenesulfonate

CAS No.
NA
M. Formula
C29H29ClN2O11S
MW
649.06
Available 1-Phenylhydrazine-1,2-disulfonate structure

1-Phenylhydrazine-1,2-disulfonate

sodium1-phenylhydrazine-1,2-disulfonate

CAS No.
85095-81-4
M. Formula
C6H6N2Na2O6S2
MW
312.22
Available Degradation product-I structure

Degradation product-I

5,5'-dimethyl-2,2'-diphenyl-2',4'-dihydro-2H,3'H-[3,4'-bipyrazol]-3'-one

CAS No.
33421-60-2
M. Formula
C20H18N4O
MW
330.39
Available Degradation product-II structure

Degradation product-II

4-hydroxy-5,5'-dimethyl-2,2'-diphenyl-2,2',4,4'-tetrahydro-3H,3'H-[4,4'-bipyrazole]-3,3'-dione

CAS No.
153952-07-9
M. Formula
C20H18N4O3
MW
362.39
Available Degradation product-III structure

Degradation product-III

ethyl (E)-3-(5-hydroxy-3-methyl-1-phenyl-1H-pyrazol-4-yl)but-2-enoate

CAS No.
NA
M. Formula
C16H18N2O3
MW
286.33
Available Edaravone trimer structure

Edaravone trimer

5,5',5''-trimethyl-2,2',2''-triphenyl-2,2'',4,4''-tetrahydro-3H,3''H-[4,4':4',4''-terpyrazole]-3,3',3''(2'H)-trione

CAS No.
68195-63-1
M. Formula
C30H26N6O3
MW
518.58
Available Edarvone impurity-1 structure

Edarvone impurity-1

ethyl(E)-3-(2-phenylhydrazono)butanoate

CAS No.
6078-46-2
M. Formula
C12H16N2O2
MW
220.27
Available Edarvone impurity-2 structure

Edarvone impurity-2

5-ethoxy-3-methyl-1-phenyl-1H-pyrazole

CAS No.
1016-41-7
M. Formula
C12H14N2O
MW
202.26
Available Edarvone impurity-3 structure

Edarvone impurity-3

5-methoxy-3-methyl-1-phenyl-1H-pyrazole

CAS No.
27349-35-5
M. Formula
C11H12N2O
MW
188.23
Available Edarvone impurity-4 structure

Edarvone impurity-4

5,5'-Dimethyl-2,2'-diphenyl-2,2',4,4'-tetrahydro-3H,3'H-[4,4'-bipyrazole]-3,3'-dion

CAS No.
7477-67-0
M. Formula
C20H18N4O2
MW
346.4
Available Edarvone impurity-5 structure

Edarvone impurity-5

2-(3-methyl-5-oxo-1-phenyl-4,5-dihydro-1H-pyrazol-4-yl)-2-sulfopropanoic acid

CAS No.
1357477-99-6
M. Formula
C13H14N2O6S
MW
326.32
Available 1-(3,4-Dihydroxyphenyl)-2-hydroxyethan-1-one structure

1-(3,4-Dihydroxyphenyl)-2-hydroxyethan-1-one

1-(3,4-Dihydroxyphenyl)-2-hydroxyethan-1-one

CAS No.
29477-54-1
M. Formula
C8H8O4
MW
168.15
Available Deoxyepinephrine structure

Deoxyepinephrine

4-(2-(methylamino)ethyl)benzene-1,2-diol

CAS No.
501-15-5
M. Formula
C9H13NO2
MW
167.21
Available EP impurity C & structure

EP impurity C &

Adrenalone 1-(3,4-dihydroxyphenyl)-2-(methylamino)ethan-1-one

CAS No.
99-45-6
M. Formula
C9H11NO3
MW
181.19
Available Epinephrine methoxy analog structure

Epinephrine methoxy analog

4-(1-methoxy-2-(methylamino)ethyl)benzene-1,2-diol

CAS No.
2947-02-6
M. Formula
C10H15NO3
MW
197.23
Available Epinephrine Sulfonic Acid structure

Epinephrine Sulfonic Acid

1-(3,4-Dihydroxyphenyl)-2-(methylamino)ethanesulfonic acid

CAS No.
26405-77-6
M. Formula
C9H13NO5S
MW
247.27
Available N-Benzyl Epinephrine structure

N-Benzyl Epinephrine

4-(2-(benzyl(methyl)amino)-1-hydroxyethyl)benzene-1,2-diol

CAS No.
1095714-91-2
M. Formula
C16H19NO3
MW
273.3
Available N-Nitroso Epinephrine structure

N-Nitroso Epinephrine

(R)-N-(2-(3,4-dihydroxyphenyl)-2-hydroxyethyl)-N-methylnitrous amide

CAS No.
NA
M. Formula
C9H12N2O4
MW
212.21
Available N-Nitroso Epinephrine structure

N-Nitroso Epinephrine

N-(2-(3,4-dihydroxyphenyl)-2-hydroxyethyl)-N-methylnitrous amide

CAS No.
NA
M. Formula
C9H12N2O4
MW
212.21
Available Oxedrine Impurity of Epinephrine structure

Oxedrine Impurity of Epinephrine

4-(1-hydroxy-2-(methylamino)ethyl)phenol

CAS No.
94-07-5
M. Formula
C9H13NO2
MW
167.21
Available Oxazinone Impurity structure

Oxazinone Impurity

(4aS,5R)-6-(((3R,5S)-5-((3-carboxyphenyl)carbamoyl)pyrrolidin-3-yl)thio)-3,5-dimethyl-1-oxo-3,4,4a,5-tetrahydro-1H-pyrrolo[1,2-c][1,3]oxazine-4,7-dicarboxylic acid

CAS No.
866186-68-7
M. Formula
C23H25N3O9S
MW
519.52
Available Pro-MAB structure

Pro-MAB

(S)-3-(Pyrrolidine-2-carboxamido)benzoic acid

CAS No.
724700-26-9
M. Formula
C12H14N2O3
MW
234.3
Available Ring opend impurity structure

Ring opend impurity

(2S,3R)-2-((1S,2R)-1-carboxy-2-hydroxypropyl)-4-(((3R,5S)-5-((3-carboxyphenyl)carbamoyl)pyrrolidin-3-yl)thio)-3-methyl-3,4-dihydro-2H-pyrrole-5-carboxylic acid

CAS No.
357154-27-9
M. Formula
C22H27N3O8S
MW
493.53
Available Desmethyl �N-Nitroso Erythromycin structure

Desmethyl �N-Nitroso Erythromycin

N-((2S,3R,4S,6R)-2-(((3R,4S,5S,6R,7R,9R,11R,12R,13S,14R)-14-ethyl-7,12,13-trihydroxy-4-(((2R,4R,5S,6S)-5-hydroxy-4-methoxy-4,6-dimethyltetrahydro-2H-pyran-2-yl)oxy)-3,5,7,9,11,13-hexamethyl-2,10-dioxooxacyclotetradecan-6-yl)oxy)-3-hydroxy-6-methyltetrahydro-2H-pyran-4-yl)-N-methylnitrous amide

CAS No.
NA
M. Formula
C36H64N2O14
MW
748.91
Available Erythromycin EP impurity B (Or) Clarithromycin EP Impurity R (Or) Erythromycin USP RC N structure

Erythromycin EP impurity B (Or) Clarithromycin EP Impurity R (Or) Erythromycin USP RC N

(3R,4S,5S,6R,7R,9R,11R,12R,13S,14R)-14-ethyl-7,12,13-trihydroxy-4-(((2R,4R,5S,6S)-5-hydroxy-4-methoxy-4,6-dimethyltetrahydro-2H-pyran-2-yl)oxy)-6-(((2S,3R,4S,6R)-3-hydroxy-6-methyl-4-(methylamino)tetrahydro-2H-pyran-2-yl)oxy)-3,5,7,9,11,13-hexamethyloxacyclotetradecane-2,10-dione

CAS No.
992-62-1
M. Formula
C36H65NO13
MW
719.91
Available Erythromycin EP Impurity D structure

Erythromycin EP Impurity D

(1S,2R,3R,4S,5R,8R,9S,10S,11R,12R,14R)-9-[(2,6-Dideoxy-3-C-methyl-3-O-methyl-?-L-ribo-hexopyranosyl)oxy]-5-ethyl-3-hydroxy-2,4,8,10,12,14-hexamethyl-11-[[3,4,6-trideoxy-3-(dimethylamino)-?-D-xylo-hexopyranosyl]oxy]-6,15,16-trioxatricyclo[10.2.1.11,4]hexadecan-7-one

CAS No.
23893-13-2
M. Formula
C37H65NO12
MW
715.91
Available Erythromycin EP Impurity E (OR) structure

Erythromycin EP Impurity E (OR)

Erythromycin A Enol Ether (2R,3R,4S,5R,8R,9S,10S,11R,12R)-9-[(2,6-Dideoxy-3-C-methyl-3-O-methyl-?-L-ribo-hexopyranosyl)oxy]-5-ethyl-3,4-dihydroxy-2,4,8,10,12,14-hexamethyl-11-[[3,4,6-trideoxy-3-(dimethylamino)-?-D-xylohexopyranosyl]oxy]-6,15-dioxabicyclo[10.2.1]pentadec-1(14)-en-7-one

CAS No.
33396-29-1
M. Formula
C37H65NO12
MW
715.91
Available Erythromycin EP Impurity F (OR) structure

Erythromycin EP Impurity F (OR)

Pseudoerythromycin A Enol Ether (2R,3R,6R,7S,8S,9R,10R)-7-[(2,6-Dideoxy-3-C-methyl-3-O-methyl-?-L-ribo-hexopyranosyl)oxy]-3-[(1R,2R)-1,2-dihydroxy-1-methylbutyl]-2,6,8,10,12-pentamethyl-9-[[3,4,6-trideoxy-3-(dimethylamino)-?-D-xylohexopyranosyl]oxy]-4,13-dioxabicyclo[8.2.1 ]tridec-1(12)-en-5-one

CAS No.
105882-69-7
M. Formula
C37H65NO12
MW
715.91
Available EP Impurity C (OR) Omeprazole EP Impurity C structure

EP Impurity C (OR) Omeprazole EP Impurity C

5-Methoxy-2-[[(4-methoxy-3,5-dimethylpyridin-2-yl)methyl]sulphanyl]-1H-benzimidazole

CAS No.
73590-85-9
M. Formula
C17H19N3O2S
MW
329.42
Available EP Impurity D, USP RC A structure

EP Impurity D, USP RC A

5-methoxy-2-(((4-methoxy-3,5-dimethylpyridin-2-yl)methyl)sulfonyl)-1H-benzo[d]imidazole

CAS No.
88546-55-8
M. Formula
C17H19N3O4S
MW
361.42
Available EP Impurity E� & USP Related Compound E structure

EP Impurity E� & USP Related Compound E

4-Methoxy-2-[[(RS)-(5-methoxy-1H-benzimidazol-2-yl)sulfinyl]methyl]-3,5-dimethylpyridine 1-oxide

CAS No.
176219-04-8
M. Formula
C17H19N3O4S
MW
361.42
Available Esomeprazole EP Impurity A structure

Esomeprazole EP Impurity A

5-Methoxy-1H-benzimidazole-2-thiol

CAS No.
37052-78-1
M. Formula
C8H8N2OS
MW
180.23
Available Impurity 1 structure

Impurity 1

3,5-dimethyl-4-nitropyridine 1-oxide

CAS No.
14248-66-9
M. Formula
C7H8N2O3
MW
168.15
Available EP Impurity-A structure

EP Impurity-A

1-[(1RS)-1-Phenylethyl]-1H-imidazole-5-carboxylic acid

CAS No.
7036-56-8
M. Formula
C12H12N2O2
MW
216.2
Available EP Impurity-B structure

EP Impurity-B

Methyl 1-[(1RS)-1-phenylethyl]-1H-imidazole-5-carboxylate

CAS No.
5377-20-8
M. Formula
C13H14N2O2
MW
230.3
Available EP Impurity-C structure

EP Impurity-C

1-Methylethyl 1-[(1RS)-1-phenylethyl]-1H-imidazole-5-carboxylate

CAS No.
792842-51-4
M. Formula
C15H18N2O2
MW
258.3
Available impurity 1 structure

impurity 1

2-Hydroxypropyl 1-(1-phenylethyl)-1H-imidazole-5-carboxylate

CAS No.
NA
M. Formula
C15H18N2O3
MW
274.3
Available N-Oxide structure

N-Oxide

Ethyl 1-((R)-1-phenylethyl)-1H-imidazole-5-carboxylate, N-oxide

CAS No.
2433776-55-5
M. Formula
C14H16N2O3
MW
260.3
Available EP Impurity A structure

EP Impurity A

10-(3-(4-(2-Hydroxyethyl)piperazin-1-yl)propyl)-2-(trifluoromethyl)-10H-phenothiazine 5-oxide

CAS No.
1674-76-6
M. Formula
C22H26F3N3O2S
MW
453.5
Available EP Impurity B structure

EP Impurity B

2-(4-(3-(2-(Trifluoromethyl)-10H-phenothiazin-10-yl)propyl)piperazin-1-yl)ethan-1-ol

CAS No.
69-23-8
M. Formula
C22H26F3N3OS
MW
437.5
Available EP Impurity C structure

EP Impurity C

2-(4-(3-(2-(Trifluoromethyl)-10H-phenothiazin-10-yl)propyl)piperazin-1-yl)ethyl heptanoate

CAS No.
2746-81-8
M. Formula
C29H38F3N3O2S
MW
549.7
Available EP Impurity D structure

EP Impurity D

2-[4-[3-[2-(Trifluoromethyl)phenothiazin-10-yl]propyl]piperazin-1-yl]ethyl octanoate

CAS No.
97671-70-0
M. Formula
C30H40F3N3O2S
MW
563.7
Available EP Impurity E structure

EP Impurity E

2-(4-(3-(2-(Trifluoromethyl)-10H-phenothiazin-10-yl)propyl)piperazin-1-yl)ethyl nonanoate

CAS No.
NA
M. Formula
C31H42F3N3O2S
MW
577.8
Available EP Impurity F structure

EP Impurity F

2-(4-(3-(2-(Trifluoromethyl)-10H-phenothiazin-10-yl)propyl)piperazin-1-yl)ethyl undecanoate

CAS No.
13220-06-9
M. Formula
C33H46F3N3O2S
MW
605.8
Available EP Impurity G structure

EP Impurity G

�2-(4-(3-(2-(Trifluoromethyl)-10H-phenothiazin-10-yl)propyl)piperazin-1-yl)ethyl dodecanoate

CAS No.
61555-18-8
M. Formula
C34H48F3N3O2S
MW
619.8
Available FluphenazineDecanoate Di-N-oxide structure

FluphenazineDecanoate Di-N-oxide

1-(2-(Decanoyloxy)ethyl)-4-(3-(2-(trifluoromethyl)-10H-phenothiazin-10-yl)propyl)piperazine 1,4-dioxide

CAS No.
76005-65-7
M. Formula
C32H44F3N3O4S
MW
623.8
Available EP Impurity A structure

EP Impurity A

10-(3-(4-(2-Hydroxyethyl)piperazin-1-yl)propyl)-2-(trifluoromethyl)-10H-phenothiazine 5-oxide

CAS No.
1674-76-6
M. Formula
C22H26F3N3O2S
MW
453.5
Available EP Impurity B structure

EP Impurity B

10-(3-(4-(2-Hydroxyethyl)piperazin-1-yl)propyl)-2-(trifluoromethyl)-10H-phenothiazine 5,5-dioxide

CAS No.
1476-79-5
M. Formula
C22H26F3N3O2S
MW
469.5
Available EP Impurity D structure

EP Impurity D

1,4-bis(3-(2-(trifluoromethyl)-10H-phenothiazin-10-yl)propyl)piperazine

CAS No.
2376-89-8
M. Formula
C36H34F6N4S2
MW
700.8
Available EP Impurity E structure

EP Impurity E

2-(4-(3-(2-Chloro-10H-phenothiazin-10-yl)propyl)piperazin-1-yl)ethan-1-ol

CAS No.
58-39-9
M. Formula
C21H26ClN3OS
MW
404.0
Available Fluphenazine Di N'-Oxide structure

Fluphenazine Di N'-Oxide

1-(2-Hydroxyethyl)-4-(3-(2-(trifluoromethyl)-10H-phenothiazin-10-yl)propyl)piperazine 1,4-dioxide

CAS No.
76005-60-2
M. Formula
C22H26F3N3O3S
MW
469.5
Available Fluphenazine Impurity 10 structure

Fluphenazine Impurity 10

10-(3-Bromopropyl)-2-(trifluoromethyl)-10H-phenothiazine

CAS No.
1675-43-0
M. Formula
C16H13BrF3NS
MW
388.2
Available Fluphenazine Impurity 11 structure

Fluphenazine Impurity 11

10-(3-Bromopropyl)-2-(trifluoromethyl)-10H-phenothiazine 5-oxide

CAS No.
NA
M. Formula
C16H13BrF3NOS
MW
404.2
Available Fluphenazine Impurity 12 structure

Fluphenazine Impurity 12

10-(3-Chloropropyl)-2-(trifluoromethyl)-10H-phenothiazine 5-oxide

CAS No.
70519-17-4
M. Formula
C16H13ClF3NOS
MW
359.8
Available Fluphenazine Impurity 13 structure

Fluphenazine Impurity 13

2-(Trifluoromethyl)-10H-phenothiazine 5-oxide

CAS No.
57997-96-3
M. Formula
C13H8F3NOS
MW
283.3
Available Fluphenazine Impurity 7 structure

Fluphenazine Impurity 7

10-(3-Chloropropyl)-2-(trifluoromethyl)-10H-phenothiazine

CAS No.
1675-46-3
M. Formula
C16H13ClF3NS
MW
343.8
Available Fluphenazine Impurity 8 structure

Fluphenazine Impurity 8

2,2'-(Piperazine-1,4-diyl)bis(ethan-1-ol)

CAS No.
122-96-3
M. Formula
C8H18N2O2
MW
174.2
Available Fluphenazine Impurity 9 structure

Fluphenazine Impurity 9

1,3-Bis(2-(trifluoromethyl)-10H-phenothiazin-10-yl)propane

CAS No.
939382-28-2
M. Formula
C29H20F6N2S2
MW
574.6
Available .2C7H17NO5 structure

.2C7H17NO5

986.84 Fosaprepitant Aprepitant Open-Ring Methyl Ester Impurity Methyl 2-(2-((2R,3S)-2-((R)-1-(3,5-Bis(trifluoromethyl)phenyl)ethoxy)-3-(4-fluorophenyl) morpholino)-1-iminoethyl)hydrazinecarboxylate

CAS No.
219821-37-1
M. Formula
C24H25F7N4O4
MW
566.5
Available 419. Aprepitant Impurity 3 structure

419. Aprepitant Impurity 3

(R)-4-Benzyl-2-((R)-1-(3,5-bis(trifluoromethyl)phenyl)ethoxy)morpholin-3-one

CAS No.
287930-75-0
M. Formula
C21H19F6NO3
MW
447.37
Available Aprepitant EP Impurity A structure

Aprepitant EP Impurity A

�5-[[(2R,3S)-2-[(1R)-1-[3,5-Bis(trifluoromethyl)phenyl]ethoxy]-3-phenylmorpholin-4-yl]methyl]-1,2-dihydro-3H-1,2,4-triazol-3-one

CAS No.
170729-76-7
M. Formula
C23H22F6N4O3
MW
516.44
Available Aprepitant EP Impurity D (or) Aprepitant USP Related Compound B, structure

Aprepitant EP Impurity D (or) Aprepitant USP Related Compound B,

(1S,2S,3R-Aprepitant, Aprepitant enantiomer 3-[[(2S,3R)-2-[(S)-1-[3,5-Bis(trifluoromethyl)phenyl]ethoxy]-3-(4-fluoro phenyl)morpholino]methyl]-1H-1,2,4-triazol-5(4H)-one

CAS No.
172822-29-6
M. Formula
C23H21F7N4O3
MW
534.43
Available Aprepitant EP Impurity E (or) Aprepitant USP Related Compound A, structure

Aprepitant EP Impurity E (or) Aprepitant USP Related Compound A,

(R,R,R)-Aprepitant 3-[[(2R,3R)-2-[(R)-1-[3,5-Bis(trifluoromethyl)phenyl]ethoxy]-3-(4-fluoro phenyl)morpholino]methyl]-1H-1,2,4-triazol-5(4H)-one

CAS No.
1148113-53-4
M. Formula
C23H21F7N4O3
MW
534.43
Available Aprepitant Impurity 2 structure

Aprepitant Impurity 2

(2R,3S)-2-((R)-1-(3,5-Bis(trifluoromethyl)phenyl)ethoxy)-3-phenylmorpholine 171338-33-3

CAS No.
874460-46-5
M. Formula
C20H19F6NO2
MW
NA
Available Aprepitant M2 Metabolite structure

Aprepitant M2 Metabolite

(1R, 2R, 3R)-Isomer (2R,3R)-2-((1R)-1-(3,5-Bis(trifluoromethyl)phenyl)ethoxy)-3-(4-fluoro phenyl) morpholine

CAS No.
1447693-83-5
M. Formula
C20H18F7NO2
MW
437.35
Available Aprepitant M2 Metabolite (1S, structure

Aprepitant M2 Metabolite (1S,

2S, 3R)-Isomer (or) Aprepitant M2 Metabolite Enantiomer (2S,3R)-2-((1S)-1-(3,5-Bis(trifluoromethyl)phenyl)ethoxy)-3-(4-fluorophenyl)morpholine

CAS No.
327623-37-0
M. Formula
C20H18F7NO2
MW
437.35
Available Desfluoro Fosaprepitant dimeglumine structure

Desfluoro Fosaprepitant dimeglumine

(2R,3R,4R,5S)-6-(methylamino)hexane-1,2,3,4,5-pentaol (3-(((2R,3S)-2-((R)-1-(3,5-bis(trifluoromethyl)phenyl)ethoxy)-3-phenylmorpholino)methyl)-5-oxo-4,5-dihydro-1H-1,2,4-triazol-1-yl)phosphonate

CAS No.
NA
M. Formula
C23H23F6N4O6P
MW
NA
Available Diastereomer of Fosaprepitant dimeglumine structure

Diastereomer of Fosaprepitant dimeglumine

(3-(((2R,3R)-2-((R)-1-(3,5-bis(trifluoromethyl)phenyl)ethoxy)-3-(4-fluorophenyl)morpholino)methyl)-5-oxo-2,5-dihydro-1H-1,2,4-triazol-1-yl)phosphonic acid dimeglumine.

CAS No.
NA
M. Formula
C37H56F7N6O16P
MW
1004.84
Available Enantiomer structure

Enantiomer

[3-{[(2S,3R)-2-[(1S)-1-[3,5-bis(Trifluoromethyl)phenyl] ethoxy]-3-(4-fluoro phenyl)morpholin-4-yl]methyl}-5-oxo- 2H-1,2,4-triazol-1-yl]phosphonic acid

CAS No.
2238-11-1
M. Formula
C23H22F7N4O6P
MW
614.41
Available Enantiomer OF Fosaprepitant Dimeglumine structure

Enantiomer OF Fosaprepitant Dimeglumine

[3-{[(2S,3R)-2-[(1S)-1-[3,5-bis(Trifluoromethyl)phenyl] ethoxy]-3-(4-fluoro phenyl)morpholin-4-yl]methyl}-5-oxo- 2H-1,2,4-triazol-1-yl]phosphonic acid Dimeglumine

CAS No.
NA
M. Formula
C37H56F7N6O16P
MW
1004.84
Available Fosaprepitant Benzyl Ester structure

Fosaprepitant Benzyl Ester

�Benzyl hydrogen (3-(((2R,3S)-2-((R)-1-(3,5-bis(trifluoromethyl)phenyl)ethoxy)-3-(4-fluorophenyl)morpholino)methyl)-5-oxo-4,5-dihydro-1H-1,2,4-triazol-1-yl)phosphonate

CAS No.
889852-02-2
M. Formula
C30H28F7N4O6P
MW
704.5
Available Impurity 1 structure

Impurity 1

Dibenzyl (3-(((2R,3S)-2-((R)-1-(3,5-bis(trifluoromethyl)phenyl)ethoxy)-3-phenylmorpholino)methyl)-5-oxo-4,5-dihydro-1H-1,2,4-triazol-1-yl)phosphonate

CAS No.
2578085-52-4
M. Formula
C37H35F6N4O6P
MW
776.67
Available Impurity 11 structure

Impurity 11

(2R,3S)-4-Benzyl-2-((R)-1-(3,5-bis(trifluoromethyl)phenyl)ethoxy)-3-(4-fluorophenyl)morpholine

CAS No.
2377328-01-1
M. Formula
C27H24F7NO2
MW
527.5
Available Foscarnet EP Impurity A structure

Foscarnet EP Impurity A

sodium (ethoxycarbonyl)phosphonate

CAS No.
72305-00-1
M. Formula
C3H5Na2O5P
MW
198.02
Available Foscarnet EP Impurity B (Or) USP RC B structure

Foscarnet EP Impurity B (Or) USP RC B

Disodium(ethoxyoxydophosphanyl)formate

CAS No.
55920-24-6
M. Formula
C3H5Na2O5P
MW
198.02
Available Foscarnet EP Impurity C structure

Foscarnet EP Impurity C

sodiumethyl (ethoxycarbonyl)phosphonate

CAS No.
72304-94-0
M. Formula
C5H10NaO5P
MW
204.09
Available Foscarnet EP Impurity D (Or) USP RC D structure

Foscarnet EP Impurity D (Or) USP RC D

Ethyl(diethoxyphosphoryl)formate

CAS No.
1474-78-8
M. Formula
C7H15O5P
MW
210.16
Available Fosphenytoin Impurity-1 structure

Fosphenytoin Impurity-1

dibenzyl ((3-((2,5-dioxo-4,4-diphenylimidazolidin-1-yl)methyl)-2,5-dioxo-4,4-diphenylimidazolidin-1-yl)methyl) phosphate

CAS No.
NA
M. Formula
C46H39N4O8P
MW
806.81
Available Fosphenytoin Impurity-2 structure

Fosphenytoin Impurity-2

(3-((2,5-dioxo-4,4-diphenylimidazolidin-1-yl)methyl)-2,5-dioxo-4,4-diphenylimidazolidin-1-yl)methyl dihydrogen phosphate

CAS No.
NA
M. Formula
C32H27N4O8P
MW
626.56
Available Fosphenytoin Impurity-3 structure

Fosphenytoin Impurity-3

benzyl bis((2,5-dioxo-4,4-diphenylimidazolidin-1-yl)methyl) phosphate

CAS No.
NA
M. Formula
C39H33N4O8P
MW
716.69
Available Fosphenytoin Impurity-4 structure

Fosphenytoin Impurity-4

bis((2,5-dioxo-4,4-diphenylimidazolidin-1-yl)methyl)hydrogen phosphate

CAS No.
NA
M. Formula
C32H27N4O8P
MW
626.56
Available Fosphenytoin Impurity-5 structure

Fosphenytoin Impurity-5

benzyl((2,5-dioxo-4,4-diphenylimidazolidin-1-yl)methyl)hydrogen phosphate

CAS No.
NA
M. Formula
C23H21N2O6P
MW
452.40
Available Glatiramer acetate Impurity1 structure

Glatiramer acetate Impurity1

(S)-4-amino-5-(diethylamino)-5-oxopentanoic acid hydrochloride

CAS No.
NA
M. Formula
C9H19ClN2O3
MW
238.71
Available Impurity 2 structure

Impurity 2

(S)-2-amino-N,N-diethyl-3-(4-hydroxyphenyl)propanamide hydrochloride

CAS No.
NA
M. Formula
C13H21ClN2O2
MW
272.77
Available Impurity 3 structure

Impurity 3

(S)-2-amino-N,N-diethylpropanamide hydrochloride

CAS No.
NA
M. Formula
C7H17ClN2O
MW
180.68
Available Impurity 4 structure

Impurity 4

(S)-2,6-diamino-N,N-diethylhexanamide dihydrochloride

CAS No.
NA
M. Formula
C10H25Cl2N3O
MW
274.23
Available Indomethacin EP Impurity A (Or) USP RC B structure

Indomethacin EP Impurity A (Or) USP RC B

4-Chlorobenzoic Acid

CAS No.
74-11-3
M. Formula
C7H5ClO2
MW
156.57
Available Indomethacin EP Impurity B (Or) USP RC A structure

Indomethacin EP Impurity B (Or) USP RC A

5-Methoxy-2-methyl-1H-indole-3-acetic Acid

CAS No.
2882-15-7
M. Formula
C12H13NO3
MW
219.24
Available Indomethacin EP Impurity C structure

Indomethacin EP Impurity C

4-chloro-N-(4-methoxyphenyl)benzamide

CAS No.
4018-82-0
M. Formula
C14H12ClNO2
MW
261.71
Available Indomethacin EP Impurity D structure

Indomethacin EP Impurity D

2-(1-(2-chlorobenzoyl)-5-methoxy-2-methyl-1H-indol-3-yl)acetic acid

CAS No.
NA
M. Formula
C19H16ClNO4
MW
357.79
Available Indomethacin EP Impurity E structure

Indomethacin EP Impurity E

2-(1-(3-chlorobenzoyl)-5-methoxy-2-methyl-1H-indol-3-yl)acetic acid

CAS No.
807614-94-4
M. Formula
C19H16ClNO4
MW
357.79
Available Indomethacin EP Impurity F structure

Indomethacin EP Impurity F

4-Chloro-N'-(4-chlorobenzoyl)-N-(4-methoxyphenyl)benzohydrazide

CAS No.
402849-27-8
M. Formula
C21H16Cl2N2O3
MW
415.27
Available Indomethacin EP Impurity G structure

Indomethacin EP Impurity G

2-(1-(3,4-dichlorobenzoyl)-5-methoxy-2-methyl-1H-indol-3-yl)acetic acid

CAS No.
402849-26-7
M. Formula
C19H15Cl2NO4
MW
392.23
Available Indomethacin EP Impurity H structure

Indomethacin EP Impurity H

methyl 2-(1-(4-chlorobenzoyl)-5-methoxy-2-methyl-1H-indol-3-yl)acetate

CAS No.
1601-18-9
M. Formula
C20H18ClNO4
MW
371.81
Available Indomethacin EP Impurity I structure

Indomethacin EP Impurity I

ethyl2-(1-(4-chlorobenzoyl)-5-methoxy-2-methyl-1H-indol-3-yl)acetate

CAS No.
16401-99-3
M. Formula
C21H20ClNO4
MW
385.84
Available Indomethacin EP Impurity J structure

Indomethacin EP Impurity J

4-chloro-N'-(2-(1-(4-chlorobenzoyl)-5-methoxy-2-methyl-1H-indol-3-yl)acetyl)-N-(4-methoxyphenyl)benzohydrazide

CAS No.
402849-25-6
M. Formula
C33H27Cl2N3O5
MW
616.50
Available Indomethacin O-Desmethyl Impurity structure

Indomethacin O-Desmethyl Impurity

2-(1-(4-chlorobenzoyl)-5-hydroxy-2-methyl-1H-indol-3-yl)acetic acid

CAS No.
2504-32-7
M. Formula
C18H14ClNO4
MW
343.76
Available De-Sarcosine impurity structure

De-Sarcosine impurity

1-((2S,3R)-3-(4-(4-cyanophenyl)thiazol-2-yl)-2-(2,5-difluorophenyl)-2-hydroxybutyl)-4-(1-(((3-(hydroxymethyl)pyridin-2-yl)(methyl)carbamoyl)oxy)ethyl)-1H-1,2,4-triazol-4-ium

CAS No.
NA
M. Formula
C32H30F2N7O4S
MW
646.69
Available Diastereoisomer 1 structure

Diastereoisomer 1

(2R,3R)-3-(2,5-difluorophenyl)-3-hydroxy-2-methyl-4-(1H-1,2,4-triazol-1-yl)butanenitrile

CAS No.
2001052-01-1
M. Formula
C13H12F2N4O
MW
278.26
Available Diastereoisomer 2 structure

Diastereoisomer 2

(2S,3S)-3-(2,5-difluorophenyl)-3-hydroxy-2-methyl-4-(1H-1,2,4-triazol-1-yl)butanenitrile

CAS No.
2001051-99-4
M. Formula
C13H12F2N4O
MW
278.26
Available Isavuconazole Amide Impurity structure

Isavuconazole Amide Impurity

1-((3R)-3-(4-(4-Carbamoylphenyl)thiazol-2-yl)-2-(2,5-difluorophenyl)-2-hydroxybutyl)-4-(1-((methyl(3-(((methylglycyl)oxy)methyl)pyridin-2-yl)carbamoyl)oxy)ethyl)-1H-1,2,4-triazol-4-ium hydrochloride

CAS No.
NA
M. Formula
C35H38ClF2N8O6S
MW
772.25
Available Isavuconazole Imino Impurity structure

Isavuconazole Imino Impurity

1-((2R,3R)-3-(4-(4-(Tert-butoxy(imino)methyl)phenyl)thiazol-2-yl)-2-(2,5-difluorophenyl)-2-hydroxybutyl)-4-(1-((methyl(3-(((methylglycyl)oxy)methyl)pyridin-2-yl)carbamoyl)oxy)ethyl)-1H-1,2,4-triazol-4-ium hydrochloride

CAS No.
2962831-00-9
M. Formula
C39H46ClF2N8O6S
MW
828.35
Available Isavuconazole Impurity 33 structure

Isavuconazole Impurity 33

1-methyl-1,4-dihydro-2H-pyrido[2,3-d][1,3]oxazin-2-one

CAS No.
2734004-61-4
M. Formula
C8H8N2O2
MW
164.16
Available Isavuconazole Urea Derivative Impurity structure

Isavuconazole Urea Derivative Impurity

1-((2S,3R)-3-(4-(4-cyanophenyl)thiazol-2-yl)-2-(2,5-difluorophenyl)-2-hydroxybutyl)-4-(1-((methyl(3-(((N-methyl-N-(methyl(3-(((methylglycyl)oxy)methyl)pyridin-2-yl)carbamoyl)glycyl)oxy)methyl)pyridin-2-yl)carbamoyl)oxy)ethyl)-1H-1,2,4-triazol-4-ium Hydrochloride

CAS No.
NA
M. Formula
C46H49ClF2N11O8S
MW
989.47
Available Key Intermediate structure

Key Intermediate

(2R,3R)-3-(2,5-difluorophenyl)-3-hydroxy-2-methyl-4-(1H-1,2,4-triazol-1-yl)butanethioamide

CAS No.
368421-58-3
M. Formula
C13H14F2N4OS
MW
312.34
Available Key Intermediate Diastereoisomer 1 structure

Key Intermediate Diastereoisomer 1

(2S,3R)-3-(2,5-difluorophenyl)-3-hydroxy-2-methyl-4-(1H-1,2,4-triazol-1-yl)butanethioamide

CAS No.
2170932-49-5
M. Formula
C13H14F2N4OS
MW
312.34
Available Key Intermediate Diastereoisomer 2 structure

Key Intermediate Diastereoisomer 2

(2R,3S)-3-(2,5-difluorophenyl)-3-hydroxy-2-methyl-4-(1H-1,2,4-triazol-1-yl)butanethioamide

CAS No.
NA
M. Formula
C13H14F2N4OS
MW
312.34
Available Key Intermediate Enantiomer structure

Key Intermediate Enantiomer

(2S,3S)-3-(2,5-difluorophenyl)-3-hydroxy-2-methyl-4-(1H-1,2,4-triazol-1-yl)butanethioamide

CAS No.
NA
M. Formula
C13H14F2N4OS
MW
312.34
Available KSM structure

KSM

(2S,3R)-3-(2,5-difluorophenyl)-3-hydroxy-2-methyl-4-(1H-1,2,4-triazol-1-yl)butanenitrile

CAS No.
241479-74-3
M. Formula
C13H12F2N4O
MW
278.26
Available KSM Enantiomer structure

KSM Enantiomer

(2R,3S)-3-(2,5-difluorophenyl)-3-hydroxy-2-methyl-4-(1H-1,2,4-triazol-1-yl)butanenitrile

CAS No.
2069200-13-9
M. Formula
C13H12F2N4O
MW
278.26
Available N-Nitroso Isavuconazonium Sulphate structure

N-Nitroso Isavuconazonium Sulphate

1-((2S,3R)-3-(4-(4-cyanophenyl)thiazol-2-yl)-2-(2,5-difluorophenyl)-2-hydroxybutyl)-4-(1-((methyl(3-(((N-methyl-N-nitrosoglycyl)oxy)methyl)pyridin-2-yl)carbamoyl)oxy)ethyl)-1H-1,2,4-triazol-4-ium

CAS No.
NA
M. Formula
C35H36F2N9O10S2
MW
844.84
Available Dehydroxy Isoproterenol structure

Dehydroxy Isoproterenol

4-(2-(isopropylamino)ethyl)benzene-1,2-diol

CAS No.
NA
M. Formula
C11H18ClNO2
MW
231.72
Available Impurity1 structure

Impurity1

2-(3,4-dihydroxyphenyl)-N-(2-(3,4-dihydroxyphenyl)-2-oxoethyl)acetamide

CAS No.
NA
M. Formula
C16H15NO6
MW
317.30
Available Impurity2 structure

Impurity2

1-(3,4-dihydroxyphenyl)-2-hydroxyethan-1-one

CAS No.
29477-54-1
M. Formula
C8H8O4
MW
168.15
Available Impurity3 structure

Impurity3

2-chloro-1-(4-hydroxyphenyl)ethan-1-one

CAS No.
6305-04-0
M. Formula
C8H7ClO2
MW
170.59
Available Isoproterenol EP Impurity A structure

Isoproterenol EP Impurity A

1-(3,4-Dihydroxyphenyl)-2-[(1-methylethyl)amino]-ethanone 121-28-8 (Base)

CAS No.
16899-81-3
M. Formula
C11H15NO3
MW
209.25
Available EP Impurity B structure

EP Impurity B

(R)-2-acetamido-3-(benzylamino)-3-oxopropyl acetate

CAS No.
1318777-54-6
M. Formula
C14H18N2O4
MW
278.31
Available EP Impurity D structure

EP Impurity D

(R)-2-amino-N-benzyl-3-methoxypropanamide hydrochloride

CAS No.
NA
M. Formula
C11H17ClN2O2
MW
244.72
Available EP Impurity E (Or) Lacosamide N-Desacetyl O-Desmethyl Impurity structure

EP Impurity E (Or) Lacosamide N-Desacetyl O-Desmethyl Impurity

(R)-2-amino-N-benzyl-3-hydroxypropanamide

CAS No.
175481-39-7
M. Formula
C10H14N2O2
MW
194.23
Available EP Impurity F (Or) Lacosamide O-Desmethyl Impurity structure

EP Impurity F (Or) Lacosamide O-Desmethyl Impurity

(R)-2-acetamido-N-benzyl-3-hydroxypropanamide

CAS No.
175481-38-6
M. Formula
C12H16N2O3
MW
236.27
Available EP Impurity H structure

EP Impurity H

(R)-2-acetamido-N-((R)-1-(benzylamino)-3-methoxy-1-oxopropan-2-yl)-3-methoxypropanamide

CAS No.
NA
M. Formula
C17H25N3O5
MW
351.40
Available EP Impurity I structure

EP Impurity I

(R)-N-benzyl-2-(3-benzylureido)-3-methoxypropanamide

CAS No.
2295925-90-3
M. Formula
C19H23N3O3
MW
341.40
Available EP Impurity J structure

EP Impurity J

Benzylamine

CAS No.
100-46-9
M. Formula
C7H9N
MW
107.16
Available EP Impurity K structure

EP Impurity K

2-acetamido-N-benzylacrylamide

CAS No.
86921-49-5
M. Formula
C12H14N2O2
MW
218.25
Available Lacosamide EP Impurity A structure

Lacosamide EP Impurity A

(S)-2-acetamido-N-benzyl-3-methoxypropanamide

CAS No.
175481-37-5
M. Formula
C13H18N2O3
MW
250.30
Available Lacosamide EP Impurity G (Or) structure

Lacosamide EP Impurity G (Or)

N-Benzylacetamide N-benzylacetamide

CAS No.
588-46-5
M. Formula
C9H11NO
MW
149.19
Available EP Impurity C (Or) structure

EP Impurity C (Or)

Carnitinamide HCl (R)-4-amino-2-hydroxy-N,N,N-trimethyl-4-oxobutan-1-aminium chloride

CAS No.
6490-20-6
M. Formula
C7H18Cl2N2O2
MW
233.14
Available evocarnitine EP Impurity D structure

evocarnitine EP Impurity D

(E)- or (Z)-4-Amino-N,N,N-trimethyl-4-oxobut-2-en-1-aminium chloride

CAS No.
857162-57-3
M. Formula
C7H16Cl2N2O
MW
215.12
Available Levocarnitine EP Impurity A (Or) Levocarnitine USP RC A structure

Levocarnitine EP Impurity A (Or) Levocarnitine USP RC A

3-Carboxy-N,N,N-trimethyl-2-propen-1-aminium chloride

CAS No.
6538-82-5
M. Formula
C7H14ClNO2
MW
179.64
Available EP Impurity C (OR) structure

EP Impurity C (OR)

T3-Acetic Acid (USP) [4-(4-Hydroxy-3-iodophenoxy)-3,5-diiodophenyl]acetic acid

CAS No.
51-24-1
M. Formula
C14H9I3O4
MW
621.93
Available EP Impurity D (OR) structure

EP Impurity D (OR)

T4-Acetic Acid (USP) [4-(4-Hydroxy-3,5-diiodophenoxy)-3,5-diiodophenyl]acetic acid

CAS No.
67-30-1
M. Formula
C14H8I4O4
MW
747.83
Available EP Impurity E structure

EP Impurity E

(2S)-2-Amino-3-[4-(4-hydroxyphenoxy)-3,5-diiodophenyl]-propanoic acid

CAS No.
1041-01-6
M. Formula
C15H13I2NO4
MW
525.08
Available EP Impurity F (OR) Levothyroxine T6 Impurity structure

EP Impurity F (OR) Levothyroxine T6 Impurity

(USP) (2S)-2-Amino-3-[4-[4-(4-hydroxy-3,5-diiodophenoxy)-3,5-diiodophenoxy]-3,5-diiodophenyl]propanoic acid

CAS No.
911661-90-0
M. Formula
C21H13I6NO5
MW
1120.76
Available EP Impurity G (OR) structure

EP Impurity G (OR)

O-Methyl-T4-Amine (USP) 2-[4-(3,5-Diiodo-4-methoxyphenoxy)-3,5-diiodophenyl]ethanamine

CAS No.
2230724-39-5
M. Formula
C15H13I4NO2
MW
746.89
Available EP Impurity H (OR) structure

EP Impurity H (OR)

T4-Benzoic Acid (USP) 4-(4-Hydroxy-3,5-diiodophenoxy)-3,5-diiodobenzoic acid

CAS No.
2055-97-2
M. Formula
C13H6I4O4
MW
733.80
Available Levothyroxine EP Impurity A structure

Levothyroxine EP Impurity A

(2S)-2-Amino-3-[4-(4-hydroxy-3-iodophenoxy)-3,5-diiodophenyl]propanoic acid

CAS No.
6893-02-3
M. Formula
C15H12I3NO4
MW
650.97
Available Levothyroxine EP Impurity I (OR) structure

Levothyroxine EP Impurity I (OR)

T4-Aldehyde (USP) 4-(4-Hydroxy-3,5-diiodophenoxy)-3,5-diiodobenzaldehyde

CAS No.
2016-06-0
M. Formula
C13H6I4O3
MW
717.80
Available N-Acetyl-T4 (USP) structure

N-Acetyl-T4 (USP)

N-Acetyl-O-(4-hydroxy-3,5-diiodophenyl)-3,5-diiodo-L-tyrosine

CAS No.
26041-51-0
M. Formula
C17H13I4NO5
MW
818.91
Available N-Formyl-T4 (USP) structure

N-Formyl-T4 (USP)

N-Formyl-O-(4-hydroxy-3,5-diiodophenyl)-3,5-diiodo-L-tyrosine

CAS No.
671235-41-9
M. Formula
C16H11I4NO5
MW
804.88
Available T4-Acetamide (USP) structure

T4-Acetamide (USP)

2-(4-(4-Hydroxy-3,5-diiodophenoxy)-3,5-diiodophenyl)acetamide

CAS No.
176258-88-1
M. Formula
C14H9I4NO3
MW
746.84
Available EP Impurity F structure

EP Impurity F

Methyl 6-Amino-6,8-dideoxy-1-thio-D-erythro-a-D-galactooctopyranoside

CAS No.
14810-93-6
M. Formula
C9H19NO5S
MW
253.31
Available Dimer impurity of loteprednol etabonate structure

Dimer impurity of loteprednol etabonate

methylene (8S,8'S,9S,9'S,10R,10'R,11S,11'S,13S,13'S,14S,14'S,17R,17'R)-bis(17-((ethoxycarbonyl)oxy)-11-hydroxy-10,13-dimethyl-3-oxo-6,7,8,9,10,11,12,13,14,15,16,17-dodecahydro-3H-cyclopenta[a]phenanthrene-17-carboxylate)

CAS No.
NA
M. Formula
C47H60O14
MW
848.98
Available Ethyl ester impurity structure

Ethyl ester impurity

ethyl (8S,9S,10R,11S,13S,14S,17R)-17-((ethoxycarbonyl)oxy)-11-hydroxy-10,13-dimethyl-3-oxo-6,7,8,9,10,11,12,13,14,15,16,17-dodecahydro-3H-cyclopenta[a]phenanthrene-17-carboxylate

CAS No.
182069-19-8
M. Formula
C25H34O7
MW
446.54
Available Prednisolone acid Impurity structure

Prednisolone acid Impurity

(8S,9S,10R,11S,13S,14S,17R)-11,17-dihydroxy-10,13-dimethyl-3-oxo-6,7,8,9,10,11,12,13,14,15,16,17-dodecahydro-3H-cyclopenta[a]phenanthrene-17-carboxylic acid

CAS No.
NA
M. Formula
C20H26O5
MW
346.42
Available Prednisolone carbonate Impurity structure

Prednisolone carbonate Impurity

(8S,9S,10R,11S,13S,14S,17R)-17-((ethoxycarbonyl)oxy)-11-hydroxy-10,13-dimethyl-3-oxo-6,7,8,9,10,11,12,13,14,15,16,17-dodecahydro-3H-cyclopenta[a]phenanthrene-17-carboxylic acid

CAS No.
NA
M. Formula
C23H30O7
MW
418.49
Available Prednisolone Dicarbonate Impurity structure

Prednisolone Dicarbonate Impurity

(8S,9S,10R,11S,13S,14S,17R)-17-((ethoxycarbonyl)oxy)-11-hydroxy-10,13-dimethyl-3-oxo-6,7,8,9,10,11,12,13,14,15,16,17-dodecahydro-3H-cyclopenta[a]phenanthrene-17-carboxylic (ethyl carbonic) anhydride

CAS No.
NA
M. Formula
C26H34O9
MW
490.55
Available impurity-1 structure

impurity-1

(Z)-3-(2-amino-1-hydroxyprop-1-en-1-yl)phenol

CAS No.
NA
M. Formula
C9H11NO2
MW
165.19
Available Threo-Metaraminol (or) structure

Threo-Metaraminol (or)

(1S,2S) Diastereoisomer 3-((1S,2S)-2-Amino-1-hydroxypropyl)phenol

CAS No.
21480-44-4
M. Formula
C9H13NO2
MW
167.2
Available USP Related compound-B structure

USP Related compound-B

2-Amino-1-[3-(benzyloxy)phenyl]propan-1-ol

CAS No.
1940-82-5
M. Formula
C16H19NO2
MW
257.33
Available EP impurity A structure

EP impurity A

17,21-dihydroxy-6?-methylpregna-1,4-diene-3,11,20-trione

CAS No.
91523-05-6
M. Formula
C22H28O5
MW
372.5
Available Methylprednisolone Acetate EP Impurity D structure

Methylprednisolone Acetate EP Impurity D

11?-hydroxy-6?-methylpregna-1,4-diene-3,20,21-trione

CAS No.
150899-33-5
M. Formula
C22H28O4
MW
356.5
Available Diol impurity of Methylnaltrexone Bromide structure

Diol impurity of Methylnaltrexone Bromide

NA

CAS No.
NA
M. Formula
C21H26BrNO5
MW
452.35
Available impurity 3 structure

impurity 3

5-((1S,2S)-2-((2R,6S,9S,11R,12R,14aS,16S,20S,23R,25aS)-20-((R)-3-amino-1-hydroxy-3-oxopropyl)-2,11,12,15-tetrahydroxy-6-((R)-1-hydroxyethyl)-16-methyl-5,8,14,19,22,25-hexaoxo-9-(4-(3-(4-(pentyloxy)phenyl)isoxazol-5-yl)benzamido)tetracosahydro-1H-dipyrrolo[2,1-c:2',1'-l][1,4,7,10,13,16]hexaazacyclohenicosin-23-yl)-1,2-dihydroxyethyl)-2-hydroxyphenyl sulfate

CAS No.
NA
M. Formula
C56H71N9O23S
MW
1270.28
Available Isomer of Side Chain Acid� structure

Isomer of Side Chain Acid�

4-(3-(4-(pentyloxy)phenyl)isoxazol-5-yl)benzoic acid

CAS No.
NA
M. Formula
C21H21NO4
MW
351.40
Available Micafungin impurity 1 structure

Micafungin impurity 1

Sodium 5-((1S,2S)-2-((2R,6S,11R,12R,14aS,15S,16S,20S,23S,25aS)-20-((R)-3-amino-1-hydroxy-3-oxopropyl)-2,11,12,15-tetrahydroxy-6-((R)-1-hydroxyethyl)-16-methyl-5,8,14,19,22,25-hexaoxo-9-(4-(2-(4-(pentyloxy)benzoyl)-2H-azirin-3-yl)benzamido)tetracosahydro-1H-dipyrrolo[2,1-c:2',1'-l][1,4,7,10,13,16]hexaazacyclohenicosin-23-yl)-1,2-dihydroxyethyl)-2-hydroxyphenyl sulfate

CAS No.
NA
M. Formula
C56H71N9O23S
MW
1270.28
Available Micafungin impurity 2 structure

Micafungin impurity 2

5-((1S,2S,3S)-4-(((2R,3R)-5-amino-1-((2R,3S,4S)-2-carbamoyl-3-hydroxy-4-methylpyrrolidin-1-yl)-3-hydroxy-1,5-dioxopentan-2-yl)amino)-3-((2S,4R)-1-(((2R,4R,5R)-4,5-dihydroxy-1-(4-(5-(4-(pentyloxy)phenyl)isoxazol-3-yl)benzoyl)pyrrolidine-2-carbonyl)-L-threonyl)-4-hydroxypyrrolidine-2-carboxamido)-1,2-dihydroxy-4-oxobutyl)-2-hydroxyphenyl hydrogen sulfate

CAS No.
NA
M. Formula
C56H71N9O23S
MW
1270.28
Available Micafungin Side Chain Acid� structure

Micafungin Side Chain Acid�

4-(5-(4-(Pentyloxy)phenyl)isoxazol-3-yl)benzoic acid

CAS No.
179162-55-1
M. Formula
C21H21NO4
MW
351.40
Available Micafungin Side Chain Methyl Ester structure

Micafungin Side Chain Methyl Ester

4-(5-(4-(Pentyloxy)phenyl)isoxazol-3-yl)benzoic acid methyl ester

CAS No.
179162-64-2
M. Formula
C22H23NO4
MW
365.42
Available O-Desulfo Micafungin structure

O-Desulfo Micafungin

N-((2R,6S,9S,11R,12R,14aS,15S,16S,20S,23S,25aS)-20-((R)-3-amino-1-hydroxy-3-oxopropyl)-23-((1S,2S)-2-(3,4-dihydroxyphenyl)-1,2-dihydroxyethyl)-2,11,12,15-tetrahydroxy-6-((R)-1-hydroxyethyl)-16-methyl-5,8,14,19,22,25-hexaoxotetracosahydro-1H-dipyrrolo[2,1-c:2',1'-l][1,4,7,10,13,16]hexaazacyclohenicosin-9-yl)-4-(5-(4-(pentyloxy)phenyl)isoxazol-3-yl)benzamide

CAS No.
539823-80-8
M. Formula
C56H71N9O20
MW
1190.2
Available EP Impurity C structure

EP Impurity C

8-chloro-6-(2-fluorophenyl)-1-methyl-4H-imidazo[1,5-a][1,4]benzodiazepine-3-carboxylic acid

CAS No.
59468-44-9
M. Formula
C19H13ClFN3O2
MW
369.8
Available EP Impurity F structure

EP Impurity F

7-chloro-5-(2-fluorophenyl)-1,3-dihydro-2H-benzo[e][1,4]diazepin-2-one

CAS No.
2886-65-9
M. Formula
C15H10ClFN2O
MW
288.71
Available EP Impurity H structure

EP Impurity H

6-chloro-4-(2-fluorophenyl)-2-methylquinazoline

CAS No.
119401-13-7
M. Formula
C15H10ClFN2
MW
272.7
Available EP Impurity A structure

EP Impurity A

(4R,4aS,5aR,12aS)-4,7-bis(dimethylamino)-3,10,12,12a-tetrahydroxy-1,11-dioxo-1,4,4a,5,5a,6,11,12a-octahydrotetracene-2-carboxamide hydrochloride

CAS No.
179471-96-6
M. Formula
C23H28ClN3O7
MW
493.94
Available EP Impurity C structure

EP Impurity C

(4S,4aS,5aR,12aS)-4-(dimethylamino)-3,10,12,12a-tetrahydroxy-7-(methylamino)-1,11-dioxo-1,4,4a,5,5a,6,11,12a-octahydrotetracene-2-carboxamide

CAS No.
4708-96-7
M. Formula
C22H25N3O7
MW
443.5
Available EP Impurity D structure

EP Impurity D

(4S,4aS,5aR,12aS)-7-amino-4-(dimethylamino)-3,10,12,12a-tetrahydroxy-1,11-dioxo-1,4,4a,5,5a,6,11,12a-octahydrotetracene-2-carboxamide

CAS No.
5679-00-5
M. Formula
C21H23N3O7
MW
429.4
Available impurity 1 structure

impurity 1

2-Amino-6-methoxy-8,9-dihydro-7H-purin-8-ol

CAS No.
NA
M. Formula
C6H9N5O2
MW
183.2
Available Nelarabine degradation structure

Nelarabine degradation

N-(2,4-diamino-6-methoxypyrimidin-5-yl)formamide

CAS No.
NA
M. Formula
C6H9N5O2
MW
183.17
Available 4-(dimethylamino)phenol structure

4-(dimethylamino)phenol

4-(dimethylamino)phenol

CAS No.
619-60-3
M. Formula
C8H11NO
MW
137.18
Available EP Impurity-C structure

EP Impurity-C

3-(Dimethylamino)phenyl dimethylcarbamate

CAS No.
16088-19-0
M. Formula
C11H16N2O2
MW
208.3
Available N-Acetyl m-anisidine structure

N-Acetyl m-anisidine

N-(3-methoxyphenyl)acetamide

CAS No.
588-16-9
M. Formula
C9H11NO2
MW
165.19
Available N-Acetyl-N-Methyl m-Anisidine structure

N-Acetyl-N-Methyl m-Anisidine

N-(3-methoxyphenyl)-N-methylacetamide

CAS No.
NA
M. Formula
C10H13NO2
MW
179.22
Available N-Methyl m-anisidine structure

N-Methyl m-anisidine

3-methoxy-N-methylaniline

CAS No.
14318-66-2
M. Formula
C8H11NO
MW
137.18
Available N,N-Dimethyl m-anisidine structure

N,N-Dimethyl m-anisidine

3-methoxy-N,N-dimethylaniline

CAS No.
15799-79-8
M. Formula
C9H13NO
MW
151.21
Available Neostigmine EP Impurity-B structure

Neostigmine EP Impurity-B

3-(Dimethylamino)phenol

CAS No.
99-07-0
M. Formula
C8H11NO
MW
137.2
Available Neostigmine Monomethyl Impurity structure

Neostigmine Monomethyl Impurity

3-(Methylamino)phenol

CAS No.
14703-69-6
M. Formula
C7H9NO
MW
123.2
Available Netarsudil Impurity-1 structure

Netarsudil Impurity-1

(S)-4-(3-amino-1-isopropoxy-1-oxopropan-2-yl)benzyl 2,4-dimethylbenzoate hydrochloride

CAS No.
NA
M. Formula
C22H28ClNO4
MW
405.92
Available Netarsudil Impurity-2 structure

Netarsudil Impurity-2

(S)-4-(3-amino-1-methoxy-1-oxopropan-2-yl)benzyl 2,4-dimethylbenzoate hydrochloride

CAS No.
NA
M. Formula
C20H24ClNO4
MW
377.87
Available Netarsudil Impurity-3 structure

Netarsudil Impurity-3

(S)-3-amino-2-(4-(hydroxymethyl)phenyl)-N-(isoquinolin-6-yl)propanamide

CAS No.
NA
M. Formula
C19H19N3O2
MW
321.38
Available Netarsudil Impurity-4 structure

Netarsudil Impurity-4

(S)-3-amino-2-(4-(hydroxymethyl)phenyl)propanoic acid hydrochloride

CAS No.
NA
M. Formula
C10H14ClNO3
MW
231.68
Available Netarsudil Impurity-5 structure

Netarsudil Impurity-5

(S)-4-(3-formamido-1-(isoquinolin-6-ylamino)-1-oxopropan-2-yl)benzyl 2,4-dimethylbenzoate

CAS No.
NA
M. Formula
C29H27N3O4
MW
481.55
Available Netarsudil Impurity-6 structure

Netarsudil Impurity-6

4-(3-(isoquinolin-6-ylamino)-3-oxoprop-1-en-2-yl)benzyl 2,4-dimethylbenzoate

CAS No.
NA
M. Formula
C28H24N2O3
MW
436.51
Available Netarsudil Impurity-7 structure

Netarsudil Impurity-7

4-((S)-3-amino-1-(((S)-2-(4-(((2,4-dimethylbenzoyl)oxy)methyl)phenyl)-3-(isoquinolin-6-ylamino)-3-oxopropyl)amino)-1-oxopropan-2-yl)benzyl 2,4-dimethylbenzoate hydrochloride

CAS No.
NA
M. Formula
C47H47ClN4O6
MW
799.37
Available Netarsudil Impurity-8 structure

Netarsudil Impurity-8

4-((S)-3-amino-1-((4-((S)-3-amino-1-(isoquinolin-6-ylamino)-1-oxopropan-2-yl)benzyl)oxy)-1-oxopropan-2-yl)benzyl 2,4-dimethylbenzoate dihydrochloride

CAS No.
NA
M. Formula
C38H40Cl2N4O5
MW
703.66
Available Netarsudil Impurity-9 structure

Netarsudil Impurity-9

2,4-dimethylbenzoic acid

CAS No.
611-01-8
M. Formula
C9H10O2
MW
150.18
Available N-Nitroso des benzyl Nicardipine structure

N-Nitroso des benzyl Nicardipine

3-methyl 5-(2-(methyl(nitroso)amino)ethyl) 2,6-dimethyl-4-(3-nitrophenyl)-1,4-dihydropyridine-3,5-dicarboxylate

CAS No.
NA
M. Formula
C19H22N4O7
MW
418.41
Available N-Nitroso des Methyl Nicardipine structure

N-Nitroso des Methyl Nicardipine

3-(2-(benzyl(nitroso)amino)ethyl) 5-methyl 2,6-dimethyl-4-(3-nitrophenyl)-1,4-dihydropyridine-3,5-dicarboxylate

CAS No.
NA
M. Formula
C25H26N4O7
MW
494.50
Available Nicardipine Dehydro Carboxylic Acid Impurity structure

Nicardipine Dehydro Carboxylic Acid Impurity

5-(Methoxycarbonyl)-2,6-dimethyl-4-(3-nitrophenyl)pyridine-3-carboxylic acid

CAS No.
64603-72-1
M. Formula
C16H14N2O6
MW
330.29
Available Nicardipine Dehydro Dimethyl Diester structure

Nicardipine Dehydro Dimethyl Diester

Dimethyl 2,6-dimethyl-4-(3-nitrophenyl)pyridine-3,5-dicarboxylate

CAS No.
76258-20-3
M. Formula
C17H16N2O6
MW
344.32
Available Nicardipine N-Des Methyl structure

Nicardipine N-Des Methyl

3-(2-(benzylamino)ethyl) 5-methyl 2,6-dimethyl-4-(3-nitrophenyl)-1,4-dihydropyridine-3,5-dicarboxylate

CAS No.
NA
M. Formula
C25H27N3O6
MW
465.51
Available Nicardipine N-Desbenzyl HC structure

Nicardipine N-Desbenzyl HC

3-Methyl 5-(2-(methylamino)ethyl) 2,6-dimethyl-4-(3-nitrophenyl)-1,4-dihydropyridine-3,5-dicarboxylate HCl

CAS No.
58368-87-9
M. Formula
C19H23N3O6
MW
389.41
Available Nicardipine O-Desmethyl HC structure

Nicardipine O-Desmethyl HC

5-[2-[Benzyl(methyl)amino]ethoxycarbonyl]-2,6-dimethyl-4-(3-nitrophenyl)-1,4-dihydro pyridine-3-carboxylic acid HCl

CAS No.
123973-71-7
M. Formula
C25H28ClN3O6
MW
501.96
Available USP RC B (Or) EP Impurity A structure

USP RC B (Or) EP Impurity A

2,6-Dimethyl-4-(3-nitrophenyl)-3,5-pyridinedicarboxylic acid methyl 2-[methyl(phenyl methyl) amino]ethyl ester hydrochloridel

CAS No.
1216817-27-4
M. Formula
C26H28ClN3O6
MW
513.97
Available USP RC C (Or) EP Impurity C structure

USP RC C (Or) EP Impurity C

1,4-Dihydro-2,6-dimethyl-4-(3-nitrophenyl)-3,5-pyridinedicarboxylic acid 3,5-dimethyl ester

CAS No.
21881-77-6
M. Formula
C17H18N2O6
MW
346.34
Available USP Related Compound D (Or) EP impurity B structure

USP Related Compound D (Or) EP impurity B

Bis(2-(benzyl(methyl)amino)ethyl) 2,6-dimethyl-4-(3-nitrophenyl)-1,4-dihydropyridine-3,5-dicarboxylate Dihydrochloride

CAS No.
71784-27-5
M. Formula
C35H42Cl2N4O6
MW
685.64
Available 298.3� structure

298.3�

Pemetrexed Acid Methyl Ester 4-[2-(2-Amino-4,7-dihydro-4-oxo-1H-pyrrolo[2,3-d]pyrimidin-6-yl)ethyl] benzoic acid methyl ester

CAS No.
155405-80-4
M. Formula
C16H16N4O3
MW
312.32
Available 441.44� Pemetrexed EP Impurity D (or) Pemetrexed BP Impurity D structure

441.44� Pemetrexed EP Impurity D (or) Pemetrexed BP Impurity D

�(2S)-2-[(4S)-4-[4-[2-(2-Amino-4-oxo-4,7-dihydro-1H-pyrrolo[2,3-d]pyrimidin-5-yl)ethyl]benzamido]-4-carboxybutanamido]pentanedioic acid

CAS No.
144051-68-3
M. Formula
C25H28N6O9
MW
556.5
Available EP Impurity A (or) Pemetrexed BP Impurity A Pemetrexed N-Methyl Analog structure

EP Impurity A (or) Pemetrexed BP Impurity A Pemetrexed N-Methyl Analog

N-[[4-[2-(2-Amino-1-methyl-4,7-dihydro-4-oxo-1H-pyrrolo[2,3-d]pyrimidin-5-yl)ethyl]phenyl]carbonyl]-L-glutamic acid

CAS No.
869791-42-4
M. Formula
C21H23N5O6
MW
NA
Available EP Impurity E (or) Pemetrexed BP Impurity E structure

EP Impurity E (or) Pemetrexed BP Impurity E

Pemetrexed R-Isome (2R)-2-[[[4-[2-(2-amino-4-oxo-4,7-dihydro-1H-pyrrolo[2,3-d]pyrimidin-5-yl)ethyl]phenyl]carbonyl]amino]pentanedioic acid � 182009-04-7 (acid)

CAS No.
937370-10-0
M. Formula
C20H21N5O6
MW
427.41
Available Pemetrexed Acid� structure

Pemetrexed Acid�

4-[2-(2-Amino-4,7-dihydro-4-oxo-1H-pyrrolo[2,3-d]pyrimidin-5-yl)ethyl] benzoic acid

CAS No.
137281-39-1
M. Formula
C15H14N4O3
MW
NA
Available Pemetrexed Keto impurity (or) Pemetrexed 6-Oxo Diacid Impurity structure

Pemetrexed Keto impurity (or) Pemetrexed 6-Oxo Diacid Impurity

N-[4-[2-(2-Amino-4,5,6,7-tetrahydro-4,6-dioxo-1H-pyrrolo[2,3-d]pyrimidin-5-yl)ethyl]benzoyl]-L-glutamic acid

CAS No.
193281-00-4
M. Formula
C22H25N5O7
MW
443.42
Available Pemetrexed Mixture of Impurity B & C structure

Pemetrexed Mixture of Impurity B & C

(2S,2'S)-2,2'-((4,4'-((2,2'-Diamino-4,4',6-trioxo-1,4,4',6,7,7'-hexahydro-1'H,5H-[5,6'-bipyrrolo[2,3-d]pyrimidine]-5,5'-diyl)bis(ethane-2,1-diyl))bis(benzoyl))bis(azanediyl))diglutaric acid 1644286-34-9

CAS No.
2368830-32-2
M. Formula
C40H40N10O13
MW
868.8
Available 4-Amino-N-(2-(diethylamino)ethyl)benzamide N-oxide dihydrochloride structure

4-Amino-N-(2-(diethylamino)ethyl)benzamide N-oxide dihydrochloride

4-Amino-N-(2-(diethylamino)ethyl)benzamide N-oxide dihydrochloride

CAS No.
NA
M. Formula
C13H23Cl2N3O2
MW
324.25
Available 4-amino-N-(2-(ethylamino)ethyl)benzamide structure

4-amino-N-(2-(ethylamino)ethyl)benzamide

4-amino-N-(2-(ethylamino)ethyl)benzamide

CAS No.
NA
M. Formula
C11H17N3O
MW
207.28
Available Procainamide N-Acetyl Impurity structure

Procainamide N-Acetyl Impurity

4-Acetamido-N-(2-(diethylamino)ethyl)benzamide hydrochloride

CAS No.
34118-92-8
M. Formula
C15H24ClN3O2
MW
313.82
Available EP Impurity A structure

EP Impurity A

2-chloro-10-(3-(4-methylpiperazin-1-yl)propyl)-10H-phenothiazine 5-oxide

CAS No.
10078-27-0
M. Formula
C20H24ClN3OS
MW
389.9
Available EP Impurity B structure

EP Impurity B

10-[3-(4-methylpiperazin-1-yl)propyl]-10H-phenothiazine

CAS No.
84-97-9
M. Formula
C20H25N3S
MW
339.5
Available EP Impurity D structure

EP Impurity D

2-chloro-10H-phenothiazine

CAS No.
92-39-7
M. Formula
C12H8ClNS
MW
233.7
Available Impurity 10 structure

Impurity 10

1,4-bis(3-(2-chloro-10H-phenothiazin-10-yl)propyl)piperazine

CAS No.
500305-74-8
M. Formula
C34H34Cl2N4S2
MW
633.7
Available N-Desmethyl Prochlorperazine Dihydrochloride structure

N-Desmethyl Prochlorperazine Dihydrochloride

2-Chloro-10-[3-(1-piperazinyl)propyl]-10H-phenothiazine dihydrochloride

CAS No.
97413-42-8
M. Formula
C19H24Cl3N3S
MW
432.83
Available N-Oxide Impurity 1 structure

N-Oxide Impurity 1

4-(3-(2-chloro-10H-phenothiazin-10-yl)propyl)-1-methylpiperazine 1-oxide

CAS No.
150111-55-0
M. Formula
C20H24ClN3OS
MW
389.9
Available N-Oxide Impurity 2 structure

N-Oxide Impurity 2

1-(3-(2-chloro-10H-phenothiazin-10-yl)propyl)-4-methylpiperazine 1-oxide

CAS No.
NA
M. Formula
C20H24ClN3OS
MW
389.9
Available 2-Hydrazino Adenosine structure

2-Hydrazino Adenosine

(2R,3R,4S,5R)-2-(6-amino-2-hydrazinyl-9H-purin-9-yl)-5-(hydroxymethyl)tetrahydrofuran-3,4-diol

CAS No.
15763-11-8
M. Formula
C10H15N7O4
MW
297.28
Available Impurity 1 structure

Impurity 1

Methyl1-(6-amino-9-((2R,3R,4S,5R)-3,4-dihydroxy-5-(hydroxymethyl)-tetrahydrofuran-2-yl)-9H-purin-2-yl)-1H-pyrazole-4-carboxylate

CAS No.
NA
M. Formula
C15H17N7O6
MW
391.34
Available Impurity 2 structure

Impurity 2

1-(6-amino-9-((2R,3R,4S,5R)-3,4-dihydroxy-5-(hydroxymethyl)tetrahydrofuran-2-yl)-9H-purin-2-yl)-1H-pyrazole-4-carboxylic acid

CAS No.
313348-29-7
M. Formula
C14H15N7O6
MW
377.31
Available Impurity 3 structure

Impurity 3

1-(6-amino-9-((2R,3R,4S,5R)-3,4-dihydroxy-5-(hydroxymethyl)tetrahydrofuran-2-yl)-9H-purin-2-yl)-1H-pyrazole-4-carbaldehyde

CAS No.
NA
M. Formula
C14H15N7O5
MW
361.32
Available Monomethyl Malonate structure

Monomethyl Malonate

3-methoxy-3-oxopropanoic acid

CAS No.
16695-14-0
M. Formula
C4H6O4
MW
118.09
Available Regadenoson Impurity 4 structure

Regadenoson Impurity 4

(2R,3R,4S,5R)-2-(6-amino-2-(2-((E)-(1-(6-amino-9-((2R,3R,4S,5R)-3,4-dihydroxy-5-(hydroxymethyl)tetrahydrofuran-2-yl)-9H-purin-2-yl)-1H-pyrazol-4-yl)methylene)hydrazinyl)-9H-purin-9-yl)-5-(hydroxymethyl)tetrahydrofuran-3,4-diol

CAS No.
NA
M. Formula
C24H28N14O8
MW
640.58
Available Ropivacaine EP Impurity A (Or) Ropivacaine BP Impurity A structure

Ropivacaine EP Impurity A (Or) Ropivacaine BP Impurity A

(S)-1-butyl-N-(2,6-dimethylphenyl)piperidine-2-carboxamide

CAS No.
27262-47-1
M. Formula
C18H28N2O
MW
288.43
Available Ropivacaine EP Impurity B (Or) Ropivacaine BP Impurity B structure

Ropivacaine EP Impurity B (Or) Ropivacaine BP Impurity B

(S)-N-(2,6-dimethylphenyl)piperidine-2-carboxamide

CAS No.
27262-40-4
M. Formula
C14H20N2O
MW
232.33
Available Triformylmethane structure

Triformylmethane

2-(hydroxymethylene)malonaldehyde

CAS No.
120186-97-2
M. Formula
C4H4O3
MW
100.07
Available Rilpivirine (Z)-Nitrile Impurity structure

Rilpivirine (Z)-Nitrile Impurity

(Z)-3-(4-amino-3,5-dimethylphenyl)acrylonitrile

CAS No.
661489-22-1
M. Formula
C11H12N2
MW
172.2
Available Rilpivirine Amide Impurity 1 structure

Rilpivirine Amide Impurity 1

(E)-3-(4-((2-((4-cyanophenyl)amino)pyrimidin-4-yl)amino)-3,5-dimethylphenyl)acrylamide

CAS No.
500288-66-4
M. Formula
C22H20N6O
MW
384.44
Available Rilpivirine Amide Impurity 2 structure

Rilpivirine Amide Impurity 2

(E)-4-((4-((4-(2-cyanovinyl)-2,6-dimethylphenyl)amino)pyrimidin-2-yl)amino)benzamide

CAS No.
1446439-51-5
M. Formula
C22H20N6O
MW
384.44
Available Rilpivirine Di-Amide Impurity structure

Rilpivirine Di-Amide Impurity

(E)-4-((4-((4-(3-amino-3-oxoprop-1-en-1-yl)-2,6-dimethylphenyl)amino)pyrimidin-2-yl)amino)benzamide

CAS No.
1446690-23-8
M. Formula
C22H22N6O2
MW
402.46
Available Rilpivirine I mpurity 1 structure

Rilpivirine I mpurity 1

(E)-3-(4-(dimethylamino)-3,5-dimethylphenyl)acrylonitrile

CAS No.
NA
M. Formula
C13H16N2
MW
200.29
Available Rilpivirine I mpurity 2 structure

Rilpivirine I mpurity 2

(E)-3-(4-amino-3,5-diethylphenyl)acrylonitrile

CAS No.
NA
M. Formula
C13H16N2
MW
200.29
Available Rilpivirine Methyl imp urity 1 structure

Rilpivirine Methyl imp urity 1

(E)-4-((4-((4-(2-cyanovinyl)-2,6-dimethylphenyl)(methyl)amino)pyrimidin-2-yl)amino)benzonitrile

CAS No.
NA
M. Formula
C23H20N6
MW
380.46
Available Rilpivirine Methyl impurity 2 structure

Rilpivirine Methyl impurity 2

(E)-4-((4-((4-(2-cyanovinyl)-2,6-dimethylphenyl)amino)pyrimidin-2-yl)(methyl)amino)benzonitrile

CAS No.
NA
M. Formula
C23H20N6
MW
380.46
Available Rilpivirine N-Oxide structure

Rilpivirine N-Oxide

(E)-2-((4-cyanophenyl)amino)-4-((4-(2-cyanovinyl)-2,6-dimethylphenyl)amino)pyrimidine 1-oxide

CAS No.
2734549-19-8
M. Formula
C22H18N6O
MW
382.4
Available EP impurity-B (or) Rocuronium BP Impurity B structure

EP impurity-B (or) Rocuronium BP Impurity B

1-[3?,17?-bis(Acetyloxy)-2?-(morpholin-4-yl)-5?-androstan-16?-yl]-1-(prop-2-enyl)pyrrolidinium bromide

CAS No.
122483-73-2
M. Formula
C34H55BrN2O5
MW
651.73
Available EP impurity-C (or) Rocuronium BP Impurity C structure

EP impurity-C (or) Rocuronium BP Impurity C

1-[3?,17?-Dihydroxy-2?-(morpholin-4-yl)-5?-androstan-16?-yl]-1-(prop-2-enyl)pyrrolidinium bromide

CAS No.
119302-86-2
M. Formula
C30H51BrN2O3
MW
567.65
Available EP impurity-D (or) Rocuronium BP Impurity D structure

EP impurity-D (or) Rocuronium BP Impurity D

1-[3?-(Acetyloxy)-17?-hydroxy-2?-(morpholin-4-yl)-5?-androstan-16?-yl]-1-(prop-2-enyl)pyrrolidinium bromide

CAS No.
1190105-63-5
M. Formula
C32H53BrN2O4
MW
609.69
Available EP impurity-F (or) Rocuronium BP Impurity F structure

EP impurity-F (or) Rocuronium BP Impurity F

1-[3?,17?-bis(Acetyloxy)-2?-(pyrrolidin-1-yl)-5?-androstan-16?-yl]-1-(prop-2-enyl)pyrrolidinium bromide

CAS No.
1190105-66-8
M. Formula
C34H55BrN2O4
MW
635.73
Available EP impurity-G structure

EP impurity-G

2?-(Morpholin-4-yl)-16?-(pyrrolidin-1-yl)-5?-androstane-3?,17?-diol

CAS No.
119302-20-4
M. Formula
C27H46N2O3
MW
446.68
Available Rocuronium Bromide EP impurity-A structure

Rocuronium Bromide EP impurity-A

3?-Hydroxy-2?-(morpholin-4-yl)-16?-(pyrrolidin-1-yl)-5?-androstan-17?-yl acetate �

CAS No.
119302-24-8
M. Formula
C29H48N2O4
MW
488.70
Available Rocuronium Bromide EP impurity-E (or) Rocuronium BP Impurity E structure

Rocuronium Bromide EP impurity-E (or) Rocuronium BP Impurity E

1-[17?-(Acetyloxy)-3?-hydroxy-2?-(pyrrolidin-1-yl)-5?-androstan-16?-yl]-1-(prop-2-enyl)pyrrolidinium bromide

CAS No.
1190105-65-7
M. Formula
C32H53BrN2O3
MW
593.69
Available Rocuronium N-Oxide structure

Rocuronium N-Oxide

1-[(2?,3?,5?,16?,17?)-17-(Acetyloxy)-3-hydroxy-2-(4-morpholinyl)androstan-16-yl]-1-(2-propenyl)pyrrolidinium bromide N-oxide

CAS No.
NA
M. Formula
C32H53BrN2O5
MW
625.69
Available EP Impurity D (Or) Ropivacaine BP Impurity D structure

EP Impurity D (Or) Ropivacaine BP Impurity D

(S)-N-(2,6-dimethylphenyl)-1-ethylpiperidine-2-carboxamide

CAS No.
98626-59-6
M. Formula
C16H24N2O
MW
260.37
Available EP Impurity E (Or) Ropivacaine BP Impurity E structure

EP Impurity E (Or) Ropivacaine BP Impurity E

(S)-N-(2,6-dimethylphenyl)-1-isopropylpiperidine-2-carboxamide

CAS No.
265120-58-9
M. Formula
C17H26N2O
MW
274.40
Available EP Impurity F (Or) Ropivacaine BP Impurity F structure

EP Impurity F (Or) Ropivacaine BP Impurity F

(S)-2-(2,6-dimethylphenyl)-3,3-dimethylhexahydroimidazo[1,5-a]pyridin-1(5H)-one

CAS No.
1945965-95-6
M. Formula
C17H24N2O
MW
272.39
Available Ropivacaine EP Impurity C (Or) Ropivacaine BP Impurity C structure

Ropivacaine EP Impurity C (Or) Ropivacaine BP Impurity C

(S)-N-(2,6-dimethylphenyl)-1-methylpiperidine-2-carboxamide

CAS No.
24358-84-7
M. Formula
C15H22N2O
MW
246.35
Available N-Methyl Saccharin structure

N-Methyl Saccharin

2-methylbenzo[d]isothiazol-3(2H)-one 1,1-dioxide

CAS No.
15448-99-4
M. Formula
C8H7NO3S
MW
197.21
Available 5-Hydroxy Albuterol Impurity structure

5-Hydroxy Albuterol Impurity

5-(2-(tert-butylamino)-1-hydroxyethyl)-3-(hydroxymethyl)benzene-1,2-diol

CAS No.
182676-90-0
M. Formula
C13H21NO4
MW
255.31
Available EP Impurity B structure

EP Impurity B

(1RS)-2-[(1,1-Dimethylethyl)amino]-1-(4-hydroxyphenyl)ethanol

CAS No.
96948-64-0
M. Formula
C12H19NO2
MW
209.3
Available EP Impurity C structure

EP Impurity C

4-(2-(tert-butylamino)-1-hydroxyethyl)-2-methylphenol

CAS No.
18910-68-4
M. Formula
C13H21NO2
MW
223.3
Available EP Impurity E structure

EP Impurity E

(1RS)-2-[Benzyl(1,1-dimethylethyl)amino]-1-[4-hydroxy-3-(hydroxymethyl)phenyl]ethanol

CAS No.
24085-03-8
M. Formula
C20H27NO3
MW
329.4
Available EP Impurity H structure

EP Impurity H

4-[2-[(1,1-Dimethylethyl)amino]ethyl]-2-methylphenol

CAS No.
132183-64-3
M. Formula
C13H21NO
MW
207.3
Available EP Impurity J structure

EP Impurity J

2-[(1,1-Dimethylethyl)amino]-1-[4-hydroxy-3-(hydroxymethyl)phenyl]ethanone

CAS No.
156547-62-5
M. Formula
C13H19NO3
MW
237.3
Available Salbutamol EP Impurity A (Or) USP RC H structure

Salbutamol EP Impurity A (Or) USP RC H

4-[2-(tert-Butylamino)-1-methoxyethyl]-2-(hydroxymethyl)phenol

CAS No.
870076-72-5
M. Formula
C14H23NO3
MW
253.34
Available Salbutamol EP Impurity G structure

Salbutamol EP Impurity G

2-[Benzyl(1,1-dimethylethyl)amino]-1-[4-hydroxy-3-(hydroxymethyl)phenyl]ethanone

CAS No.
64092-10-0
M. Formula
C20H25NO3
MW
327.4
Available 2-phenylacetamide structure

2-phenylacetamide

2-phenylacetamide

CAS No.
103-81-1
M. Formula
C8H9NO
MW
135.17
Available benzyl 2-phenylacetate structure

benzyl 2-phenylacetate

benzyl 2-phenylacetate

CAS No.
102-16-9
M. Formula
C15H14O2
MW
226.28
Available isopropyl 2-phenylacetate structure

isopropyl 2-phenylacetate

isopropyl 2-phenylacetate

CAS No.
4861-85-2
M. Formula
C11H14O2
MW
78.23
Available Diastereomer 1 Sulfoxide structure

Diastereomer 1 Sulfoxide

Heptakis (6-S- (2-carboxyethyl) -6-thio)-mon(6-S-(2carboxyethyl) -(R) -sulfinyl) cyclomaltooctaose

CAS No.
2412953-11-6
M. Formula
C72H112O49S8
MW
2018.1
Available Diastereomer 2 Sulfoxide structure

Diastereomer 2 Sulfoxide

Heptakis (6-S- (2-carboxyethyl) -6-thio)-mon(6-S-(2carboxyethyl) -(S)-sulfinyl) cyclomaltooctaose)

CAS No.
2412953-12-7
M. Formula
C72H112O49S8
MW
2018.1
Available Dimethyl amino Sugammadex structure

Dimethyl amino Sugammadex

NA

CAS No.
2412952-85-1
M. Formula
C71H113NO46S7
MW
1941.07
Available impurity 1 structure

impurity 1

(Mono dehydro) NA

CAS No.
NA
M. Formula
C69H106O46S7
MW
1895.98
Available impurity 2 structure

impurity 2

(Mono anhydro) NA

CAS No.
NA
M. Formula
C69H106O46S7
MW
1895.98
Available impurity 3 structure

impurity 3

(Mono methylene ether) NA

CAS No.
NA
M. Formula
C73H112O48S8
MW
2014.13
Available Mono-Thio Sugammadex structure

Mono-Thio Sugammadex

Heptakis(6-S-(2-carboxyethyl)-6-thio)-mono(6-S-(Monothiol)cyclomaltooctaose

CAS No.
2379877-90-2
M. Formula
C69H108O46S8
MW
1930.1
Available Sugammadex Disulfide Impurity structure

Sugammadex Disulfide Impurity

Heptakis(6-S-(2-carboxyethyl)-6-thio)-mono(6-S-(2-carboxyethyl)-6-disulfide)cyclomaltooctaose

CAS No.
2412952-81-7
M. Formula
C72H112O48S9
MW
2034.2
Available Sugammadex mono Hydroxy Impurity structure

Sugammadex mono Hydroxy Impurity

6A,6B,6C,6D,6E,6F,6G-Heptakis-S-(2-carboxyethyl)-6A,6B,6C,6D,6E,6F,6G-heptathio-y-Cyclodextrin

CAS No.
2376607-98-4
M. Formula
C69H108O47S7
MW
1914.0
Available Sugammadex mono iodo Impurity structure

Sugammadex mono iodo Impurity

Heptakis(6-S-(2-carboxyethyl)-6-thio)-mono(6-S-Iodo)cyclomaltooctaose

CAS No.
NA
M. Formula
C69H107IO46S7
MW
2023.89
Available Sugammadex Thioglycolic acid impurity structure

Sugammadex Thioglycolic acid impurity

NA

CAS No.
NA
M. Formula
C71H110O48S8
MW
1988.09
Available Sugammadex Thiolactic acid impurity structure

Sugammadex Thiolactic acid impurity

NA

CAS No.
NA
M. Formula
C72H112O48S8
MW
2002.1
Available degradation impurity structure

degradation impurity

3-(((4-amino-2-methylpyrimidin-5-yl)methyl)thio)propane-1,2-diol

CAS No.
2169341-54-0
M. Formula
C9H15N3O2S
MW
229.29
Available EP Impurity C structure

EP Impurity C

3-((4-amino-2-methylpyrimidin-5-yl)methyl)-5-(2-chloroethyl)-4-methylthiazol-3-ium chloride hydrochloride

CAS No.
7275-24-3
M. Formula
C12H17Cl3N4S
MW
355.71
Available EP Impurity G structure

EP Impurity G

5-(2-Acetoxyethyl)-3-((4-amino-2-methylpyrimidin-5-yl)methyl)-4-methylthiazol-3-ium chloride hydrochloride

CAS No.
1037-29-2
M. Formula
C14H20Cl2N4O2S
MW
379.30
Available Thiamine EP Impurity A structure

Thiamine EP Impurity A

2-[3-[(4-Amino-2-methylpyrimidin-5-yl)methyl]-4-methyl-1,3-thiazol-3-ium-5-yl]ethyl sulfate

CAS No.
2380-61-2
M. Formula
C12H16N4O4S2
MW
344.4
Available 9-Dichloroacetamido impurity structure

9-Dichloroacetamido impurity

(4S,4aS,5aR,12aS)-9-(2,2-dichloroacetamido)-4,7-bis(dimethylamino)-3,10,12,12a-tetrahydroxy-1,11-dioxo-1,4,4a,5,5a,6,11,12a-octahydrotetracene-2-carboxamide

CAS No.
NA
M. Formula
C25H28Cl2N4O8
MW
583.42
Available EP Impurity B structure

EP Impurity B

(4S,4aS,5aR,12aS)-9-amino-4,7-bis(dimethylamino)-3,10,12,12a-tetrahydroxy-1,11-dioxo-1,4,4a,5,5a,6,11,12a-octahydrotetracene-2-carboxamide hydrochloride

CAS No.
149934-21-4
M. Formula
C23H29ClN4O7
MW
508.96
Available Tigecycline EP Impurity A (OR) structure

Tigecycline EP Impurity A (OR)

4-Epi Tigecycline (4R,4aS,5aR,12aS)-9-[2-(tert-butylamino)acetamido]-4,7-bis(dimethylamino)-3,10,12,12a-tetrahydroxy-1,11-dioxo-1,4,4a,5,5a,6,11,12a-octahydrotetracene-2-carboxamide

CAS No.
1422262-97-2
M. Formula
C29H39N5O8
MW
585.7
Available Tigecycline USP Related compound G structure

Tigecycline USP Related compound G

(1S ,4aR ,4bR ,10aR ,11aS )-7-[2-(tert-Butylamino)acetamido]-9(dimethylamino)-1,4,4a,6-tetrahydroxy-2,5,12-trioxo-1,2,4a,5,10,10a,11,11a-octahydro1,4b-methanobenzo[b]fluorene-3-carboxamide

CAS No.
1268494-40-1
M. Formula
C27H32N4O9
MW
556.6
Available USP Related compound F structure

USP Related compound F

(S)-4-({6-[2-(tert-Butylamino)acetamido]-8-(dimethylamino)-5-hydroxy-4-oxo-1,2,3,4tetrahydronaphthalen-2-yl}methyl)-2,5-dihydroxy-3,6-dioxocyclohexa-1,4- dienecarboxamide

CAS No.
1268494-46-7
M. Formula
C26H32N4O8
MW
528.6
Available Vildagliptin Amide Impurity structure

Vildagliptin Amide Impurity

(2S)-1-[2-[(3-Hydroxytricyclo[3.3.1.13,7]dec-1-yl)amino]acetyl]-2-pyrrolidine carboxamide

CAS No.
565453-39-6
M. Formula
C17H27N3O3
MW
321.41
Available Vildagliptin Amino Alcohol Impurity structure

Vildagliptin Amino Alcohol Impurity

3-Amino-1-adamantanol

CAS No.
702-82-9
M. Formula
C10H17NO
MW
167.25
Available Vildagliptin Carboxylic Acid Lithium Salt structure

Vildagliptin Carboxylic Acid Lithium Salt

(2S)-1-[2-[(3-Hydroxytricyclo[3.3.1.13,7]dec-1-yl)amino]acetyl]-2-pyrrolidine carboxylic acid lithium salt

CAS No.
565453-40-9
M. Formula
C17H25LiN2O4
MW
328.33
Available Vildagliptin Carboxylic Acid Methyl Ester structure

Vildagliptin Carboxylic Acid Methyl Ester

(2S)-1-[2-[(3-Hydroxytricyclo[3.3.1.13,7]dec-1-yl)amino]acetyl]-2-pyrrolidine carboxylic acid methyl ester

CAS No.
948574-56-9
M. Formula
C18H28N2O4
MW
336.43
Available Vildagliptin Chloroacetyl Nitrile Racemate structure

Vildagliptin Chloroacetyl Nitrile Racemate

1-(Chloroacetyl)-2-pyrrolidinecarbonitrile

CAS No.
274901-37-0
M. Formula
C7H9ClN2O
MW
172.61
Available EP Impurity-B structure

EP Impurity-B

5-[2-[4-(1,2-benzisothiazol-3-yl)piperazin-1-yl]ethyl]-6-chloro-1H-indole-2,3-dione

CAS No.
1159977-56-6
M. Formula
C21H19ClN4O2S
MW
426.9
Available EP Impurity-C structure

EP Impurity-C

2-[2-amino-5-[2-[4-(1,2-benzisothiazol-3-yl)piperazin-1-yl]ethyl]-4-chlorophenyl]acetic acid

CAS No.
1159977-64-6
M. Formula
C21H23ClN4O2S
MW
431.0
Available EP Impurity-D structure

EP Impurity-D

5,5'-bis[2-[4-(1,2-benzisothiazol-3-yl)piperazin-1-yl]ethyl]-6,6'-dichloro-3-hydroxy-1,1',3,3'-tetrahydro-2H,2'H-3,3'-biindole-2,2'-dione

CAS No.
1303996-68-0
M. Formula
C42H40Cl2N8O3S2
MW
839.9
Available Impurity-1 structure

Impurity-1

(6-Chloro-5-(2-Chloro-1-Hydroxy-Ethyl)-1,3-Dihydro-Indol-2-One)

CAS No.
884305-06-0
M. Formula
C10H9Cl2NO2
MW
246.1
Available

Impurity-2

5-acetyl-6-chloroindolin-2-one

CAS No.
NA
M. Formula
C10H8ClNO2
MW
209.63
Available Impurity-F structure

Impurity-F

(5-(2-Chloroethyl)-6-chlorooxindole)

CAS No.
118289-55-7
M. Formula
C10H9Cl2NO
MW
230.1
Available Impurity-P structure

Impurity-P

1,4-Bis(benzo[d]isothiazol-3-yl)piperazine

CAS No.
223586-82-1
M. Formula
C18H16N4S2
MW
352.5
Available Ziprasidone EP Impurity-A structure

Ziprasidone EP Impurity-A

3-piperazin-1-yl-1,2-benzisothiazole

CAS No.
87691-87-0
M. Formula
C11H13N3S
MW
219.3
Available Ziprasidone EP Impurity-E structure

Ziprasidone EP Impurity-E

3-(1,2-benzisothiazol-3-yl)-5-[2-[4-(1,2-benzisothiazol-3-yl)piperazin-1-yl]ethyl]-6-chloro-1,3-dihydro-2H-indol-2-one

CAS No.
1159977-04-4
M. Formula
C28H24ClN5OS2
MW
546.1

Request a Quote

Need a specific compound not listed here? We can synthesize custom products on request.

Contact Our Team