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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
Zaleplon Related Compound C (7-[3-(N-ethylacetamido)phenyl]pyrazolo[1,5-a]pyrimidine-3-carboxamide)
REF: 45-1724383CAS: 940951-54-2 		- - -815.00 €Fri 27 Dec 24
Zidovudine Related Compound D ([1-(2-Deoxy-β-D-ribofuranosyl)]thymine)
REF: 45-1724543CAS: 50-89-5 		- - -1,346.00 €Fri 27 Dec 24
Didanosine Related Compound A (Hypoxanthine)
REF: 45-1191226CAS: 68-94-0 		- - -1,477.00 €Fri 27 Dec 24
Brimonidine Related Compound A (5-Bromoquinoxalin-6-amine)
REF: 45-1076419CAS: 50358-63-9 		- - -1,308.00 €Fri 27 Dec 24
Moxifloxacin Related Compound F (1-Cyclopropyl-6-fluoro-8-methoxy-7-(1-methyloctahydro-6H-pyrrolo[3,4-b]pyridin-6-yl)-4-oxo-1,4-dihydroquinoline-3-carboxylic acid)
REF: 45-1448661CAS: 1179992-99-4 		- - -1,441.00 €Fri 27 Dec 24
Ketamine Related Compound A (1-[(2-Chlorophenyl)(methylimino)methyl]cylcopentanol)
REF: 45-1356020CAS: 6740-87-0 		- - -1,477.00 €Fri 27 Dec 24
Glycopyrrolate Related Compound L (Methyl 2-cyclopentyl-2-hydroxy-2-phenylacetate)
REF: 45-1296100CAS: 19833-96-6 		- - -1,477.00 €Fri 27 Dec 24
Fosinopril Related Compound G ((4-phenylbutyl)phosphinyl acetic acid, disodium salt)
REF: 45-1283470		- - -1,441.00 €Fri 27 Dec 24
Vecuronium Bromide Related Compound F (Piperidinium,1-[(2β,3α,5α,16β,17β)-17-acetyloxy-3-hydroxy-2-(1-piperidinyl)androstan-16-yl]-1-methyl bromide)
REF: 45-1711224CAS: 73319-13-8 		- - -1,439.00 €Fri 27 Dec 24
Bosentan Related Compound C (1,2-bis({6-[4-(tert-butyl)phenylsulfonamido]-5-(2-methoxyphenoxy)-[2,2'-bipyrimidin]-4-yl}oxy)ethane)
REF: 45-1076148CAS: 1097263-60-9 		- - -1,371.00 €Fri 27 Dec 24
Cefadroxil Related Compound B ((6R,7R)-7-amino-3-methyl-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid)
REF: 45-1097126CAS: 22252-43-3 		- - -1,292.00 €Fri 27 Dec 24
Amoxicillin Related Compound F (3-(4-Hydroxyphenyl)pyrazin-2-ol; phenylpyrazinediol)
REF: 45-1031569CAS: 126247-63-0 		- - -1,477.00 €Fri 27 Dec 24
Beclomethasone Dipropionate Related Compound A (9-Chloro-11β,17-dihydroxy-16β-methyl-3,20-dioxopregna-1,4-diene-21-yl propionate)
REF: 45-1048517CAS: 69224-79-9 		- - -1,222.00 €Fri 27 Dec 24
Aztreonam E-Isomer
REF: 45-1046307		- - -1,627.00 €Fri 27 Dec 24
Fluorescein Related Compound C (2-(2,4-Dihydroxybenzoyl)benzoic acid)
REF: 45-1277037CAS: 2513-33-9 		- - -1,371.00 €Fri 27 Dec 24
Triethylamine (N,N-diethylethanamine)
REF: 45-1683559CAS: 121-44-8 		- - -455.00 €Fri 27 Dec 24
Terazosin Related Compound A (6,7-Dimethoxy-2-(piperazin-1-yl)quinazolin-4-amine dihydrochloride)
REF: 45-1643463CAS: 60548-08-5 		- - -1,441.00 €Fri 27 Dec 24
Efavirenz Related Compound C (6-chloro-2-cyclopropyl-4-(trifluoromethyl)quinoline)
REF: 45-1234136CAS: 391860-73-4 		- - -1,390.00 €Fri 27 Dec 24
Benzphetamine Related Compound E ((1S,2S)-2-[Benzyl(methyl)amino]-1-phenylpropan-1-ol hydrochloride)
REF: 45-1059058CAS: 1591807-86-1 		- - -950.00 €Fri 27 Dec 24
Mycophenolate Mofetil Related Compound A (2-Morpholinoethyl (E)-6-(1,3-dihydro-4,6-dihydroxy-7-methyl-3-oxo-5-isobenzofuranyl)-4-methyl-4-hexenoate)
REF: 45-1448967CAS: 1322681-36-6 		- - -1,477.00 €Fri 27 Dec 24
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Zaleplon Related Compound C (7-[3-(N-ethylacetamido)phenyl]pyrazolo[1,5-a]pyrimidine-3-carboxamide)

CAS:940951-54-2
Compounds containing a pyrimidine ring (whether or not hydrogenated) or piperazine ring in the structure, …
Formula:
C17H17N5O2
Color and Shape:
Powder
Molecular weight:
323.13822

Ref: 45-1724383

Estimated delivery in United States, on Friday 27 Dec 2024
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Zidovudine Related Compound D ([1-(2-Deoxy-β-D-ribofuranosyl)]thymine)

CAS:50-89-5
Nucleic acids and their salts, whether or not chemically defined; other heterocyclic compounds, nesoi
Formula:
C10H14N2O5
Color and Shape:
White Crystalline Powder
Molecular weight:
242.09027

Ref: 45-1724543

Estimated delivery in United States, on Friday 27 Dec 2024
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Didanosine Related Compound A (Hypoxanthine)

CAS:68-94-0
Nucleic acids and their salts, whether or not chemically defined; other heterocyclic compounds, nesoi
Formula:
C5H4N4O
Color and Shape:
Off-White White Powder
Molecular weight:
136.03851

Ref: 45-1191226

Estimated delivery in United States, on Friday 27 Dec 2024
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Brimonidine Related Compound A (5-Bromoquinoxalin-6-amine)
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Brimonidine Related Compound A (5-Bromoquinoxalin-6-amine)

CAS:50358-63-9
Heterocyclic compounds with nitrogen hetero-atom(s) only, aromatic or modified aromatic, nesoi
Formula:
C8H6BrN3
Color and Shape:
Yellow Crystalline Powder
Molecular weight:
222.97451

Ref: 45-1076419

Estimated delivery in United States, on Friday 27 Dec 2024
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Moxifloxacin Related Compound F (1-Cyclopropyl-6-fluoro-8-methoxy-7-(1-methyloctahydro-6H-pyrrolo[3,4-b]pyridin-6-yl)-4-oxo-1,4-dihydroquinoline-3-carboxylic acid)

CAS:1179992-99-4
Compounds (excluding drugs and pesticides) containing a quinoline or isoquinoline ring-system (whether or not hydrogenated) …
Formula:
C22H26FN3O4
Color and Shape:
Off-White Yellow Tan Powder
Molecular weight:
415.19073

Ref: 45-1448661

Estimated delivery in United States, on Friday 27 Dec 2024
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Ketamine Related Compound A (1-[(2-Chlorophenyl)(methylimino)methyl]cylcopentanol)

CAS:6740-87-0
Aromatic imines and their derivatives, salts thereof
Formula:
C13H16NOCl
Color and Shape:
Off-White Powder
Molecular weight:
237.09204

Ref: 45-1356020

Estimated delivery in United States, on Friday 27 Dec 2024
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Glycopyrrolate Related Compound L (Methyl 2-cyclopentyl-2-hydroxy-2-phenylacetate)

CAS:19833-96-6
Carboxylic acids w/ alcohol function but w/o other oxygen function and their derivatives, nesoi
Formula:
C14H18O3
Color and Shape:
Translucent Light Yellow Liquid Viscous
Molecular weight:
234.12559

Ref: 45-1296100

Estimated delivery in United States, on Friday 27 Dec 2024
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Fosinopril Related Compound G ((4-phenylbutyl)phosphinyl acetic acid, disodium salt)

Organo-inorganic compounds, nesoi
Formula:
C12H15Na2O4P
Color and Shape:
Off-White Powder
Molecular weight:
300.05033

Ref: 45-1283470

Estimated delivery in United States, on Friday 27 Dec 2024
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Vecuronium Bromide Related Compound F (Piperidinium,1-[(2β,3α,5α,16β,17β)-17-acetyloxy-3-hydroxy-2-(1-piperidinyl)androstan-16-yl]-1-methyl bromide)

CAS:73319-13-8
Compounds containing an unfused pyridine ring in the structure, nesoi
Formula:
C32H55BrN2O3
Color and Shape:
White Off-White Powder
Molecular weight:
594.33961

Ref: 45-1711224

Estimated delivery in United States, on Friday 27 Dec 2024
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Bosentan Related Compound C (1,2-bis({6-[4-(tert-butyl)phenylsulfonamido]-5-(2-methoxyphenoxy)-[2,…
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Bosentan Related Compound C (1,2-bis({6-[4-(tert-butyl)phenylsulfonamido]-5-(2-methoxyphenoxy)-[2,2'-bipyrimidin]-4-yl}oxy)ethane)

CAS:1097263-60-9
Sulfonamides, nesoi
Formula:
C52H52N10O10S2
Color and Shape:
Off-White Powder
Molecular weight:
1040.33093

Ref: 45-1076148

Estimated delivery in United States, on Friday 27 Dec 2024
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Cefadroxil Related Compound B ((6R,7R)-7-amino-3-methyl-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid)

CAS:22252-43-3
Nucleic acids and their salts, whether or not chemically defined; other heterocyclic compounds, nesoi
Formula:
C8H10N2O3S
Color and Shape:
Off-White Crystalline Powder
Molecular weight:
214.04121

Ref: 45-1097126

Estimated delivery in United States, on Friday 27 Dec 2024
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Amoxicillin Related Compound F (3-(4-Hydroxyphenyl)pyrazin-2-ol; phenylpyrazinediol)

CAS:126247-63-0
Aromatic or modified aromatic heterocyclic compounds withnitrogen hetero-atom(s) only nesoi
Formula:
C10H8N2O2
Color and Shape:
Yellow Powder
Molecular weight:
188.05858

Ref: 45-1031569

Estimated delivery in United States, on Friday 27 Dec 2024
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Beclomethasone Dipropionate Related Compound A (9-Chloro-11β,17-dihydroxy-16β-methyl-3,20-dioxopregna-1,4-diene-21-yl propionate)

CAS:69224-79-9
Carboxylic acids with additional oxygen function and their anhydrides, halides, peroxides etc, nesoi
Formula:
C25H33ClO6
Color and Shape:
White Off-White Powder
Molecular weight:
464.19657

Ref: 45-1048517

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Aztreonam E-Isomer

Compounds containing an unfused thiazole ring (whether or not hydrogenated) in the structure
Formula:
C13H17N5O8S2
Color and Shape:
Powder
Molecular weight:
435.27

Ref: 45-1046307

Estimated delivery in United States, on Friday 27 Dec 2024
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Fluorescein Related Compound C (2-(2,4-Dihydroxybenzoyl)benzoic acid)

CAS:2513-33-9
Carboxylic acids with additional oxygen function and their anhydrides, halides, peroxides etc, nesoi
Formula:
C14H10O5
Color and Shape:
Powder
Molecular weight:
258.05282

Ref: 45-1277037

Estimated delivery in United States, on Friday 27 Dec 2024
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Triethylamine (N,N-diethylethanamine)
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Triethylamine (N,N-diethylethanamine)

CAS:121-44-8
Acyclic monoamines and their derivatives, nesoi
Formula:
C6H15N
Color and Shape:
Clear Colorless Liquid
Molecular weight:
101.19 g/mol

Ref: 45-1683559

Estimated delivery in United States, on Friday 27 Dec 2024
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Terazosin Related Compound A (6,7-Dimethoxy-2-(piperazin-1-yl)quinazolin-4-amine dihydrochloride)

CAS:60548-08-5
Compounds containing a pyrimidine ring (whether or not hydrogenated) or piperazine ring in the structure, …
Formula:
C14H19N5O2· 2HCl
Color and Shape:
White Powder
Molecular weight:
289.15387

Ref: 45-1643463

Estimated delivery in United States, on Friday 27 Dec 2024
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Efavirenz Related Compound C (6-chloro-2-cyclopropyl-4-(trifluoromethyl)quinoline)

CAS:391860-73-4
Compounds (excluding drugs and pesticides) containing a quinoline or isoquinoline ring-system (whether or not hydrogenated) …
Formula:
C13H9ClF3N
Color and Shape:
Off-White Powder
Molecular weight:
271.03756

Ref: 45-1234136

Estimated delivery in United States, on Friday 27 Dec 2024
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Benzphetamine Related Compound E ((1S,2S)-2-[Benzyl(methyl)amino]-1-phenylpropan-1-ol hydrochloride)

CAS:1591807-86-1
Aromatic drugs of amino-alcohols, other than those contg more than one kind of oxygen function, …
Formula:
C17H21NOHCl
Color and Shape:
White Off-White Powder
Molecular weight:
255.16231

Ref: 45-1059058

Estimated delivery in United States, on Friday 27 Dec 2024
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Mycophenolate Mofetil Related Compound A (2-Morpholinoethyl (E)-6-(1,3-dihydro-4,6-dihydroxy-7-methyl-3-oxo-5-isobenzofuranyl)-4-methyl-4-hexenoate)

CAS:1322681-36-6
Nucleic acids and their salts, whether or not chemically defined; other heterocyclic compounds, nesoi
Formula:
C22H29NO7
Color and Shape:
Beige Powder
Molecular weight:
419.1944

Ref: 45-1448967

Estimated delivery in United States, on Friday 27 Dec 2024
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