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Active pharmaceutical ingredient (API) impurities for research

All products contained in this category are intended for laboratory use only, and are not meant for human consumption.

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BrandProduct dataPurityPrice rangeEstimated delivery
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Norfloxacin Related Compound A (7-Chloro-1-ethyl-6-fluoro-4-oxo-1,4-dihydroquinoline-3-carboxylic acid)
REF: 45-1471517CAS: 68077-26-9 		- - -1,477.00 €Tue 15 Oct 24
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Diltiazem Related Compound A (AS) (trans-diltiazem hydrochloride)
REF: 45-1205014		- - -1,552.00 €Tue 15 Oct 24
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Fosamprenavir Related Compound A (Calcium (6R,7S,16S,17R)-4,19-bis[(4-aminophenyl)sulfonyl]-7,16-dibenzyl-2,21-dimethyl-9,14-dioxo-10,13-dioxa-4,8,15,19-tetraazadocosane-6,17-diyl bis(phosphate))
REF: 45-1283379		- - -3,384.00 €Tue 15 Oct 24
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Nicotine Related Compound G ((S)-3-(piperidin-2-yl)pyridine)
REF: 45-1463382CAS: 494-52-0 		- - -1,371.00 €Tue 15 Oct 24
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Bosentan Related Compound E (4-(tert-butyl)benzenesulfonamide)
REF: 45-1076160CAS: 6292-59-7 		- - -1,477.00 €Tue 15 Oct 24
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Perindopril Related Compound F ((S)-ethyl 2-{(3S,5aS,9aS,10aS)-3-methyl-1,4-dioxodecahydropyrazino[1,2-a]indol-2(1H)-yl}pentanoate)
REF: 45-1510947CAS: 129970-98-5 		- - -1,477.00 €Tue 15 Oct 24
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Rivastigmine Related Compound C ((S)-3-[1-(Dimethylamino)ethyl]phenol)
REF: 45-1604811CAS: 139306-10-8 		- - -1,477.00 €Tue 15 Oct 24
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Primidone Related Compound C (2-phenyl butyramide)
REF: 45-1562033CAS: 90-26-6 		- - -1,333.00 €Tue 15 Oct 24
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Glimepiride Related Compound D (Glimepiride 3-isomer, or 1-[[m-[2-(3-Ethyl-4-methyl-2-oxo-3-pyrroline-1-carboxamido)ethyl]phenyl]sulfonyl]-3-(trans-4-methylcyclohexyl)urea)
REF: 45-1292347CAS: 791104-62-6 		- - -1,477.00 €Tue 15 Oct 24
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Nevirapine Related Compound A (5,11-dihydro-6H-11-ethyl-4-methyl-dipyrido[3,2-b:2',3'-e][1,4]diazepin-6-one)
REF: 45-1460725CAS: 133627-17-5 		- - -1,477.00 €Tue 15 Oct 24
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Amiloride Related Compound A (Methyl 3,5-diamino-6-chloropyrazine-2-carboxylate)
REF: 45-1019712CAS: 1458-01-1 		- - -1,299.00 €Tue 15 Oct 24
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Prostaglandin B1 ((13E,15S)-15-Hydroxy-9-oxoprosta-8(12),13-dien-1-oic acid)
REF: 45-1578554CAS: 13345-51-2 		- - -3,680.00 €Tue 15 Oct 24
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Phentermine Related Compound C ((2-Methylprop-1-en-1-yl)benzene)
REF: 45-1528534CAS: 768-49-0 		- - -2,204.00 €Tue 15 Oct 24
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Indomethacin Related Compound A (2-(5-methoxy-2-methyl-1H-indol-3-yl)acetic acid)
REF: 45-1417113CAS: 2882-15-7 		- - -1,477.00 €Tue 15 Oct 24
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Irinotecan Related Compound D ((R)-9-[(1,4'-Bipiperidine)-1'-carbonyloxy]-4,11-diethyl-3,4,12,14-tetrahydro-4-hydroxy-3,14-dioxo-1H-pyrano[3',4':6,7]indolizino[1,2-b]quinoline hydrochloride, trihydrate)
REF: 45-1347653		- - -1,627.00 €Tue 15 Oct 24
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Melengestrol Acetate Related Compound A (16-Methylene-3,20-dioxopregn-4-en-17-yl acetate)
REF: 45-1379265CAS: 6815-51-6 		- - -1,552.00 €Tue 15 Oct 24
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Gabapentin Related Compound D ([1-(3-Oxo-2-aza-spiro[4.5]dec-2-ylmethyl)cyclohexyl]acetic acid)
REF: 45-1287358CAS: 1076198-17-8 		- - -1,477.00 €Tue 15 Oct 24
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8-Chlorotheophylline
REF: 45-1121038CAS: 85-18-7 		- - -614.00 €Tue 15 Oct 24
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Adapalene Related Compound A (Methyl 6-bromo-2-naphthoate)
REF: 45-1011710CAS: 33626-98-1 		- - -1,477.00 €Tue 15 Oct 24
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Moxifloxacin Related Compound C (1-Cyclopropyl-8-ethoxy-6-fluoro-1,4-dihydro-7-[(4aS,7aS)-octahydro-6H-pyrrolo[3,4-b]pyridin-6-yl]-4-oxo-3-quinolinecarboxylic acid hydrochloride monohydrate)
REF: 45-1448639		- - -1,552.00 €Tue 15 Oct 24
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Norfloxacin Related Compound A (7-Chloro-1-ethyl-6-fluoro-4-oxo-1,4-dihydroquinoline-3-carboxylic acid)

CAS:68077-26-9
Compounds containing a pyrimidine ring (whether or not hydrogenated) or piperazine ring in the structure, …
Formula:
C12H9ClFNO3
Color and Shape:
White Powder
Molecular weight:
269.0255

Ref: 45-1471517

Estimated delivery in United States, on Tuesday 15 Oct 2024
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Diltiazem Related Compound A (AS) (trans-diltiazem hydrochloride)

Nucleic acids and their salts, whether or not chemically defined; other heterocyclic compounds, nesoi
Formula:
C22H26N2O4S
Color and Shape:
Powder
Molecular weight:
450.98

Ref: 45-1205014

Estimated delivery in United States, on Tuesday 15 Oct 2024
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Fosamprenavir Related Compound A (Calcium (6R,7S,16S,17R)-4,19-bis[(4-aminophenyl)sulfonyl]-7,16-dibenzyl-2,21-dimethyl-9,14-dioxo-10,13-dioxa-4,8,15,19-tetraazadocosane-6,17-diyl bis(phosphate))

Other aromatic organo-sulfur compounds (excluding pesticides)
Formula:
C44H58CaxN6O16P2S2
Color and Shape:
White Off-White Powder
Molecular weight:
1132.20778

Ref: 45-1283379

Estimated delivery in United States, on Tuesday 15 Oct 2024
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Nicotine Related Compound G ((S)-3-(piperidin-2-yl)pyridine)

CAS:494-52-0
Vegetable alkaloids, natural or reproduced by synthesis, their salts and other derivatives, nesoi
Formula:
C10H14N2
Color and Shape:
Clear Colorless Pale Yellow Oily Liquid
Molecular weight:
162.1157

Ref: 45-1463382

Estimated delivery in United States, on Tuesday 15 Oct 2024
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Bosentan Related Compound E (4-(tert-butyl)benzenesulfonamide)
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Bosentan Related Compound E (4-(tert-butyl)benzenesulfonamide)

CAS:6292-59-7
Sulfonamides, nesoi
Formula:
C10H15NO2S
Color and Shape:
Powder
Molecular weight:
213.08235

Ref: 45-1076160

Estimated delivery in United States, on Tuesday 15 Oct 2024
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Perindopril Related Compound F ((S)-ethyl 2-{(3S,5aS,9aS,10aS)-3-methyl-1,4-dioxodecahydropyrazino[1,2-a]indol-2(1H)-yl}pentanoate)

CAS:129970-98-5
Heterocyclic compounds (excluding aromatic or modified
Formula:
C19H30N2O4
Color and Shape:
Powder
Molecular weight:
350.22056

Ref: 45-1510947

Estimated delivery in United States, on Tuesday 15 Oct 2024
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Rivastigmine Related Compound C ((S)-3-[1-(Dimethylamino)ethyl]phenol)

CAS:139306-10-8
Amino-naphthols and other amino-phenols, their ethers and esters, other than those cont more than one …
Formula:
C10H15NO
Color and Shape:
White Powder
Molecular weight:
165.11536

Ref: 45-1604811

Estimated delivery in United States, on Tuesday 15 Oct 2024
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Primidone Related Compound C (2-phenyl butyramide)

CAS:90-26-6
Aromatic cyclic amides (including cyclic carbamates) an
Formula:
C10H13NO
Color and Shape:
White Crystalline Powder
Molecular weight:
163.09971

Ref: 45-1562033

Estimated delivery in United States, on Tuesday 15 Oct 2024
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Glimepiride Related Compound D (Glimepiride 3-isomer, or 1-[[m-[2-(3-Ethyl-4-methyl-2-oxo-3-pyrroline-1-carboxamido)ethyl]phenyl]sulfonyl]-3-(trans-4-methylcyclohexyl)urea)

CAS:791104-62-6
Sulfonamides, nesoi
Formula:
C24H34N4O5S
Color and Shape:
White Powder
Molecular weight:
490.62

Ref: 45-1292347

Estimated delivery in United States, on Tuesday 15 Oct 2024
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Nevirapine Related Compound A (5,11-dihydro-6H-11-ethyl-4-methyl-dipyrido[3,2-b:2',3'-e][1,4]diazepin-6-one)

CAS:133627-17-5
Aromatic or modified aromatic drugs with nitrogen heter
Formula:
C14H14N4O
Color and Shape:
Light Yellow Off-White Crystalline Powder
Molecular weight:
254.11676

Ref: 45-1460725

Estimated delivery in United States, on Tuesday 15 Oct 2024
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Amiloride Related Compound A (Methyl 3,5-diamino-6-chloropyrazine-2-carboxylate)

CAS:1458-01-1
Aromatic or modified aromatic drugs with nitrogen heter
Formula:
C6H7ClN4O2
Color and Shape:
Powder
Molecular weight:
202.02575

Ref: 45-1019712

Estimated delivery in United States, on Tuesday 15 Oct 2024
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Prostaglandin B1 ((13E,15S)-15-Hydroxy-9-oxoprosta-8(12),13-dien-1-oic acid)

CAS:13345-51-2
Prostaglandins, thromboxanes and leukotrienes, their derivatives and structural analogues
Formula:
C20H32O4
Color and Shape:
White Off-White Solid
Molecular weight:
336.23006

Ref: 45-1578554

Estimated delivery in United States, on Tuesday 15 Oct 2024
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Phentermine Related Compound C ((2-Methylprop-1-en-1-yl)benzene)

CAS:768-49-0
Cyclic hydrocarbons not elsewhere specified or included
Formula:
C10H12
Color and Shape:
Colorless Liquid
Molecular weight:
132.0939

Ref: 45-1528534

Estimated delivery in United States, on Tuesday 15 Oct 2024
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Indomethacin Related Compound A (2-(5-methoxy-2-methyl-1H-indol-3-yl)acetic acid)
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Indomethacin Related Compound A (2-(5-methoxy-2-methyl-1H-indol-3-yl)acetic acid)

CAS:2882-15-7
Aromatic or modified aromatic drugs with nitrogen hetero
Formula:
C12H13NO3
Color and Shape:
Light Yellow Crystalline Powder
Molecular weight:
219.08954

Ref: 45-1417113

Estimated delivery in United States, on Tuesday 15 Oct 2024
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Irinotecan Related Compound D ((R)-9-[(1,4'-Bipiperidine)-1'-carbonyloxy]-4,11-diethyl-3,4,12,14-tetrahydro-4-hydroxy-3,14-dioxo-1H-pyrano[3',4':6,7]indolizino[1,2-b]quinoline hydrochloride, trihydrate)

Other alkaloids,natural or reproduced by synthesis, and their salts, ethers,esters&other derivatives, nesoi
Formula:
C33H38N4O6·HCl· 3H2O
Color and Shape:
White Light Yellow Powder
Molecular weight:
677.19

Ref: 45-1347653

Estimated delivery in United States, on Tuesday 15 Oct 2024
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Melengestrol Acetate Related Compound A (16-Methylene-3,20-dioxopregn-4-en-17-yl acetate)

CAS:6815-51-6
Estrogens and progestins
Formula:
C24H32O4
Color and Shape:
Pale Yellow Off-White Powder
Molecular weight:
384.23006

Ref: 45-1379265

Estimated delivery in United States, on Tuesday 15 Oct 2024
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Gabapentin Related Compound D ([1-(3-Oxo-2-aza-spiro[4.5]dec-2-ylmethyl)cyclohexyl]acetic acid)

CAS:1076198-17-8
Lactams not elsewhere specified or included
Formula:
C18H29NO3
Color and Shape:
White Powder
Molecular weight:
307.21474

Ref: 45-1287358

Estimated delivery in United States, on Tuesday 15 Oct 2024
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8-Chlorotheophylline

CAS:85-18-7
Theophylline and aminophylline (excluding fenetylline) and their derivatives, salts thereof, not elsewhere specified or included
Formula:
C7H7ClN4O2
Color and Shape:
White Off-White Crystalline Powder
Molecular weight:
214.02575

Ref: 45-1121038

Estimated delivery in United States, on Tuesday 15 Oct 2024
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Adapalene Related Compound A (Methyl 6-bromo-2-naphthoate)
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Adapalene Related Compound A (Methyl 6-bromo-2-naphthoate)

CAS:33626-98-1
Aromatic monocarboxylic acids, their anhydrides, halides, peroxides, peroxyacid and their derivatives, nesoi
Formula:
C12H9BrO2
Color and Shape:
Tan Powder
Molecular weight:
263.97859

Ref: 45-1011710

Estimated delivery in United States, on Tuesday 15 Oct 2024
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Moxifloxacin Related Compound C (1-Cyclopropyl-8-ethoxy-6-fluoro-1,4-dihydro-7-[(4aS,7aS)-octahydro-6H-pyrrolo[3,4-b]pyridin-6-yl]-4-oxo-3-quinolinecarboxylic acid hydrochloride monohydrate)

Compounds (excluding drugs and pesticides) containing a quinoline or isoquinoline ring
Formula:
C22H26FN3O4·HCl·H2O
Color and Shape:
Solid
Molecular weight:
415.19073

Ref: 45-1448639

Estimated delivery in United States, on Tuesday 15 Oct 2024
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