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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Product data	Purity	Price range	Estimated delivery
Losartan Related Compound C (2-Butyl-4-chloro-1-[[2'-(1H-tetrazol-5-yl)biphenyl-4-yl]methyl]-1H-imidazol-5-carbaldehyde) REF: 45-1370495CAS: 114798-36-6	- - -	1,371.00 €	Tue 03 Dec 24
Dipyridamole Related Compound A (2,2'-{[4,6,8-Tri(piperidin-1-yl)pyrimido[5,4-d]pyrimidin-2-yl]azanediyl}diethanol) REF: 45-1220517CAS: 16982-40-4	- - -	1,477.00 €	Tue 03 Dec 24
Memantine Related Compound D (1-Bromo-3,5-dimethyladamantane) REF: 45-1380546CAS: 941-37-7	- - -	1,477.00 €	Tue 03 Dec 24
Irinotecan Related Compound B ((S)-4,11-diethyl-4,9-dihydroxy-1H-pyrano[3',4':6,7]indolizino[1,2-b]quinoline-3,14(4H,12H)-dione) REF: 45-1347631CAS: 86639-52-3	- - -	1,371.00 €	Tue 03 Dec 24
Desogestrel Related Compound C (13-Ethyl-11-methylene-18,19-dinor-17α-pregn-4-en-20-yn-17-ol-3-one) REF: 45-1173268CAS: 54048-10-1	- - -	1,477.00 €	Tue 03 Dec 24
Linezolid R-Isomer (N-{[(R)-3-(3-Fluoro-4-morpholinophenyl)-2-oxo-5-oxazolidinyl]methyl}acetamide) REF: 45-1367639CAS: 872992-20-6	- - -	1,371.00 €	Tue 03 Dec 24
Bisoprolol Related Compound F (2-Isopropoxyethyl 4-[2-hydroxy-3-(isopropylamino)propoxy]benzoate) REF: 45-1075815CAS: 864544-37-6	- - -	1,583.00 €	Tue 03 Dec 24
Rivastigmine Tartrate R-Isomer ((R)-3-[1-(Dimethylamino)ethyl]phenyl ethyl(methyl)carbamate, hydrogen tartrate) REF: 45-1604847	- - -	1,477.00 €	Tue 03 Dec 24
Potassium Chloride REF: 45-1548190CAS: 7447-40-7	- - -	434.00 €	Tue 03 Dec 24
Ganciclovir Mono-N-methyl Valinate (2-(RS)-[(Guanin-9-yl)methoxy]-3-hydroxypropyl N-methyl-L-valinate hydrochloride) REF: 45-1288339CAS: 1401562-16-0	- - -	1,441.00 €	Tue 03 Dec 24
Ecamsule Related Compound B (4-(Hydroxymethyl)benzoic acid) REF: 45-1231626CAS: 3006-96-0	- - -	1,371.00 €	Tue 03 Dec 24
Nateglinide Related Compound A (trans-4-isopropylcyclohexanecarboxylic acid) REF: 45-1457618CAS: 7077-05-6	- - -	1,292.00 €	Tue 03 Dec 24
Cetirizine Related Compound B (2-(4-Benzhydrylpiperazin-1-yl)ethan-1-ol dihydrochloride) REF: 45-1102941CAS: 108983-83-1	- - -	1,145.00 €	Tue 03 Dec 24
Decitabine Related Compound A (1-O-Acetyl-3,5-di-O-(4-chlorobenzoyl)-2-deoxy-D-ribofuranose) REF: 45-1165215CAS: 1207459-15-1	- - -	1,398.00 €	Tue 03 Dec 24
Lamotrigine Related Compound D (N-[5-amino-6-(2,3-dichlorophenyl)-1,2,4-triazin-3-yl]-2,3-dichlorobenzamide) REF: 45-1356790CAS: 252186-79-1	- - -	1,371.00 €	Tue 03 Dec 24
Candesartan Cilexetil Related Compound D (1-{[(Cyclohexyloxy)carbonyl]oxy}ethyl 3-({2'-(2-ethyl-2H-tetrazol-5-yl)-[1,1'-biphenyl]-4-yl}methyl)-2-oxo-2,3-dihydro-1H-benzimidazole-4-carboxylate) REF: 45-1087847CAS: 1185256-03-4	- - -	1,371.00 €	Tue 03 Dec 24
Prazosin Related Compound D (Furan-2-yl(piperazin-1-yl)methanone) REF: 45-1554749CAS: 40172-95-0	- - -	1,292.00 €	Tue 03 Dec 24
Methylprednisolone Related Compound C (11β-Hydroxy-6α-methylandrosta-1,4-diene-3,17-dione) REF: 45-1435036CAS: 61919-52-6	- - -	1,407.00 €	Tue 03 Dec 24
Pramipexole Related Compound G ((6S,7S)-2-Amino-6-(propylamino)-4,5,6,7-tetrahydrobenzothiazol-7-ol) REF: 45-1553848CAS: 1001648-71-0	- - -	1,583.00 €	Tue 03 Dec 24
Levofloxacin Related Compound C ((S)-ethyl 9-fluoro-2,3-dihydro-3-methyl-10-(4-methyl-1-piperazinyl)-7-oxo-7H-pyrido[1,2,3-de]-1,4-benzoxazine-6-carboxylate) REF: 45-1362136CAS: 177472-30-9	- - -	1,371.00 €	Tue 03 Dec 24

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Losartan Related Compound C (2-Butyl-4-chloro-1-[[2'-(1H-tetrazol-5-yl)biphenyl-4-yl]methyl]-1H-imidazol-5-carbaldehyde)

CAS:114798-36-6

Compounds containing an unfused imidazole ring (whether or not hydrogenated) in the structure nesoi

Formula:

C₂₂H₂₁ClN₆O

Color and Shape:

Powder

Molecular weight:

420.14654

Ref: 45-1370495

Estimated delivery in United States, on Tuesday 3 Dec 2024

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Dipyridamole Related Compound A (2,2'-{[4,6,8-Tri(piperidin-1-yl)pyrimido[5,4-d]pyrimidin-2-yl]azanediyl}diethanol)

CAS:16982-40-4

Compounds containing a pyrimidine ring (whether or not hydrogenated) or piperazine ring in the structure, …

Formula:

C₂₅H₄₀N₈O₂

Color and Shape:

Yellow Powder

Molecular weight:

484.32742

Ref: 45-1220517

Estimated delivery in United States, on Tuesday 3 Dec 2024

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Memantine Related Compound D (1-Bromo-3,5-dimethyladamantane)

CAS:941-37-7

Other halogenated derivatives of cyclanic, cyclenic or cycloterpenic hydrocarbons, excluding hexachlorocyclohexane

Formula:

C₁₂H₁₉Br

Color and Shape:

Yellow Liquid

Molecular weight:

242.06701

Ref: 45-1380546

Estimated delivery in United States, on Tuesday 3 Dec 2024

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Irinotecan Related Compound B ((S)-4,11-diethyl-4,9-dihydroxy-1H-pyrano[3',4':6,7]indolizino[1,2-b]quinoline-3,14(4H,12H)-dione)

CAS:86639-52-3

Other alkaloids,natural or reproduced by synthesis, and their salts, ethers,esters&other derivatives, nesoi

Formula:

C₂₂H₂₀N₂O₅

Color and Shape:

Yellow Off-White Powder

Molecular weight:

392.13722

Ref: 45-1347631

Estimated delivery in United States, on Tuesday 3 Dec 2024

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Desogestrel Related Compound C (13-Ethyl-11-methylene-18,19-dinor-17α-pregn-4-en-20-yn-17-ol-3-one)

CAS:54048-10-1

Estrogens and progestins

Formula:

C₂₂H₂₈O₂

Color and Shape:

White Crystalline Powder

Molecular weight:

324.20893

Ref: 45-1173268

Estimated delivery in United States, on Tuesday 3 Dec 2024

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Linezolid R-Isomer (N-{[(R)-3-(3-Fluoro-4-morpholinophenyl)-2-oxo-5-oxazolidinyl]methyl}acetamide)

CAS:872992-20-6

Nucleic acids and their salts, whether or not chemically defined; other heterocyclic compounds, nesoi

Formula:

C₁₆H₂₀FN₃O₄

Color and Shape:

White Off-White Solid Powder

Molecular weight:

337.14378

Ref: 45-1367639

Estimated delivery in United States, on Tuesday 3 Dec 2024

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Bisoprolol Related Compound F (2-Isopropoxyethyl 4-[2-hydroxy-3-(isopropylamino)propoxy]benzoate)

CAS:864544-37-6

Aromatic amino-alcohol-phenols, aromatic amino-acid-phenols and other aromatic amino compounds with oxygen function

Formula:

C₁₈H₂₉NO₅

Color and Shape:

White Powder

Molecular weight:

339.20457

Ref: 45-1075815

Estimated delivery in United States, on Tuesday 3 Dec 2024

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Rivastigmine Tartrate R-Isomer ((R)-3-[1-(Dimethylamino)ethyl]phenyl ethyl(methyl)carbamate, hydrogen tartrate)

Aromatic cyclic amides (including cyclic carbamates) and their derivatives; salts thereof

Formula:

C₁₄H₂₂N₂O₂·C₄H₆O₆

Color and Shape:

White Powder

Molecular weight:

250.16813

Ref: 45-1604847

Estimated delivery in United States, on Tuesday 3 Dec 2024

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Potassium Chloride

CAS:7447-40-7

Potassium chloride

Formula:

KCl

Color and Shape:

White Powder

Molecular weight:

73.93256

Ref: 45-1548190

Estimated delivery in United States, on Tuesday 3 Dec 2024

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Ganciclovir Mono-N-methyl Valinate (2-(RS)-[(Guanin-9-yl)methoxy]-3-hydroxypropyl N-methyl-L-valinate hydrochloride)

CAS:1401562-16-0

Compounds containing a pyrimidine ring, whether or not hydrogenated, or piperazine ring in the structure, …

Formula:

C₁₅H₂₄N₆O₅·xHCl

Color and Shape:

White Powder

Molecular weight:

404.1575

Ref: 45-1288339

Estimated delivery in United States, on Tuesday 3 Dec 2024

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Ecamsule Related Compound B (4-(Hydroxymethyl)benzoic acid)

CAS:3006-96-0

Carboxylic acids w/ alcohol function but w/o other oxygen function and their derivatives, nesoi

Formula:

C₈H₈O₃

Color and Shape:

White Beige Powder

Molecular weight:

152.04734

Ref: 45-1231626

Estimated delivery in United States, on Tuesday 3 Dec 2024

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Nateglinide Related Compound A (trans-4-isopropylcyclohexanecarboxylic acid)

CAS:7077-05-6

Cyclanic, cyclenic or cycloterpenic monocarboxylic acid

Formula:

C₁₀H₁₈O₂

Color and Shape:

White Crystals

Molecular weight:

170.13068

Ref: 45-1457618

Estimated delivery in United States, on Tuesday 3 Dec 2024

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Cetirizine Related Compound B (2-(4-Benzhydrylpiperazin-1-yl)ethan-1-ol dihydrochloride)

CAS:108983-83-1

Compounds containing a pyrimidine ring (whether or not hydrogenated) or piperazine ring in the structure, …

Formula:

C₁₉H₂₄N₂O·2HCl

Color and Shape:

Powder

Molecular weight:

368.14222

Ref: 45-1102941

Estimated delivery in United States, on Tuesday 3 Dec 2024

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Decitabine Related Compound A (1-O-Acetyl-3,5-di-O-(4-chlorobenzoyl)-2-deoxy-D-ribofuranose)

CAS:1207459-15-1

Compounds containing an unfused furan ring (whether or not hydrogenated) in the structure nesoi

Formula:

C₂₁H₁₈Cl₂O₇

Color and Shape:

Off-White White Powder

Molecular weight:

452.04296

Ref: 45-1165215

Estimated delivery in United States, on Tuesday 3 Dec 2024

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Lamotrigine Related Compound D (N-[5-amino-6-(2,3-dichlorophenyl)-1,2,4-triazin-3-yl]-2,3-dichlorobenzamide)

CAS:252186-79-1

Compounds (excluding melamine) containing an unfused triazine ring (whether or not hydrogenated) in the structure

Formula:

C₁₆H₉Cl₄N₅O

Color and Shape:

White Powder

Molecular weight:

426.95612

Ref: 45-1356790

Estimated delivery in United States, on Tuesday 3 Dec 2024

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Candesartan Cilexetil Related Compound D (1-{[(Cyclohexyloxy)carbonyl]oxy}ethyl 3-({2'-(2-ethyl-2H-tetrazol-5-yl)-[1,1'-biphenyl]-4-yl}methyl)-2-oxo-2,3-dihydro-1H-benzimidazole-4-carboxylate)

CAS:1185256-03-4

Heterocyclic compounds with nitrogen hetero-atom(s) only, aromatic or modified aromatic, nesoi

Formula:

C₃₃H₃₄N₆O₆

Color and Shape:

White Powder

Molecular weight:

610.25398

Ref: 45-1087847

Estimated delivery in United States, on Tuesday 3 Dec 2024

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Prazosin Related Compound D (Furan-2-yl(piperazin-1-yl)methanone)

CAS:40172-95-0

Nucleic acids and their salts, whether or not chemically defined; other heterocyclic compounds, nesoi

Formula:

C₉H₁₂N₂O₂

Color and Shape:

Yellow Pale Yellow Crystalline Powder

Molecular weight:

180.08988

Ref: 45-1554749

Estimated delivery in United States, on Tuesday 3 Dec 2024

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Methylprednisolone Related Compound C (11β-Hydroxy-6α-methylandrosta-1,4-diene-3,17-dione)

CAS:61919-52-6

Adrenal cortical hormones and their derivatives nesoi

Formula:

C₂₀H₂₆O₃

Color and Shape:

Powder

Molecular weight:

314.18819

Ref: 45-1435036

Estimated delivery in United States, on Tuesday 3 Dec 2024

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Pramipexole Related Compound G ((6S,7S)-2-Amino-6-(propylamino)-4,5,6,7-tetrahydrobenzothiazol-7-ol)

CAS:1001648-71-0

Compounds containing a benzothiazole ring-system (whether or not hydrogenated), not further fused

Formula:

C₁₀H₁₇N₃OS

Color and Shape:

Off-White Solid

Molecular weight:

227.10923

Ref: 45-1553848

Estimated delivery in United States, on Tuesday 3 Dec 2024

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Levofloxacin Related Compound C ((S)-ethyl 9-fluoro-2,3-dihydro-3-methyl-10-(4-methyl-1-piperazinyl)-7-oxo-7H-pyrido[1,2,3-de]-1,4-benzoxazine-6-carboxylate)

CAS:177472-30-9

Nucleic acids and their salts, whether or not chemically defined; other heterocyclic compounds, nesoi

Formula:

C₂₀H₂₄FN₃O₄

Color and Shape:

Powder

Molecular weight:

389.17508

Ref: 45-1362136

Estimated delivery in United States, on Tuesday 3 Dec 2024

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