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.

20
- 50
- 100
- 200

products per page. 3227 products on this category.

Product data	Purity	Price range	Estimated delivery
Zidovudine Related Compound C (thymine) REF: 45-1724532CAS: 65-71-4	- - -	1,371.00 €	Tue 15 Oct 24
Gatifloxacin Related Compound E (1-Cyclopropyl-6-fluoro-8-methoxy-7-(2-methylpiperazin-1-yl)-4-oxo-1,4-dihydroquinoline-3-carboxylic acid monohydrochloride) REF: 45-1288452CAS: 1219097-41-2	- - -	1,441.00 €	Tue 15 Oct 24
Fosinopril Related Compound B ((4S)-4-Cyclohexyl-1-[(R)-[(S)-1-hydroxy-2-methylpropoxy](4-phenylbutyl)phosphinyl]acetyl-D-proline propionate (ester), hemibarium salt, sesquihydrate) REF: 45-1283426	- - -	1,357.00 €	Tue 15 Oct 24
Methylprednisolone Hemisuccinate Related Compound B (11β,21-Dihydroxy-6α-methyl-3,20-dioxopregna-1,4-dien-17-yl hydrogen succinate) REF: 45-1437020CAS: 77074-42-1	- - -	1,469.00 €	Tue 15 Oct 24
Valacyclovir Related Compound E (2-[(2-amino-6-oxo-1,6-dihydro-9H-purin-9-yl)methoxy]ethyl N-[(benzyloxy)carbonyl]-L-valinate) REF: 45-1707872CAS: 124832-31-1	- - -	1,477.00 €	Tue 15 Oct 24
Decitabine Related Compounds B and C Mixture (4-Amino-1-(3,5-di-O-(4-chlorobenzoyl)-2-deoxy-β-D-ribofuranosyl)-1,3,5-triazin-2(1H)-one and 4-Amino-1-(3,5-di-O-(4-chlorobenzoyl)-2-deoxy-a-D-ribofuranosyl)-1,3,5-triazin-2(1H)-one) REF: 45-1165226	- - -	1,398.00 €	Tue 15 Oct 24
Brinzolamide Related Compound B ((R)-4-Amino-2-(3-methoxypropyl)-3,4-dihydro-2H-thieno[3,2-e][1,2]thiazine-6-sulfonamide 1,1-dioxide oxalate) REF: 45-1076385	- - -	1,552.00 €	Tue 15 Oct 24
Risedronate Related Compound A ([1-Hydroxy-2-(2-pyridinyl)ethylidene]bis(phosphonic acid), monohydrate) REF: 45-1604621CAS: 1220806-40-5	- - -	1,371.00 €	Tue 15 Oct 24
Orphenadrine Related Compound B (N-Ethyl-N,N-dimethyl-2-[phenyl(o-tolyl)methoxy]ethanaminium chloride; also known as N-Ethyl-N,N-dimethyl-2-[phenyl(2-tolyl)methoxy]ethanaminium chloride) REF: 45-1479020CAS: 93940-17-1	- - -	1,552.00 €	Tue 15 Oct 24
Modafinil Related Compound A (2-[(diphenylmethyl)sulfinyl]acetic acid) REF: 45-1445346CAS: 63547-24-0	- - -	1,292.00 €	Tue 15 Oct 24
Dopamine Related Compound B (4-(2-Aminoethyl)-2-methoxyphenol hydrochloride) REF: 45-1225226CAS: 1477-68-5	- - -	1,469.00 €	Tue 15 Oct 24
2-Amino-5-chlorobenzophenone REF: 45-1022808CAS: 719-59-5	- - -	1,477.00 €	Tue 15 Oct 24
Levalbuterol Related Compound F ((R)-1-[4-(Benzyloxy)-3-(hydroxymethyl)phenyl]-2-(tert-butylamino)ethan-1-ol) REF: 45-1358842CAS: 174607-68-2	- - -	1,552.00 €	Tue 15 Oct 24
Allopurinol Related Compound F (ethyl-(E/Z)-3-(2-carbethoxy-2-cyanoethenyl)amino-1H-pyrazole-4-carboxylate) REF: 45-1013079CAS: 321571-07-7	- - -	1,371.00 €	Tue 15 Oct 24
2-Mononitroglycerin REF: 45-1445584CAS: 620-12-2	- - -	1,328.00 €	Tue 15 Oct 24
Metoprolol Related Compound A ((+/-)1-(ethylamino)-3-[4-(2-methoxyethyl)phenoxy]-propan-2-ol) REF: 45-1441232CAS: 109632-08-8	- - -	1,583.00 €	Tue 15 Oct 24
Sulfamethoxazole Related Compound B (4-amino-N-{4-[N-(5-methylisoxazol-3-yl)sulfamoyl]phenyl}benzenesulfonamide) REF: 45-1631522CAS: 135529-16-7	- - -	1,699.00 €	Tue 15 Oct 24
Famciclovir Related Compound A (2-[2-(2-Amino-9H-purin-9-yl)ethyl]propane-1,3-diol] hydrochloride) REF: 45-1269174CAS: 246021-75-0	- - -	1,371.00 €	Tue 15 Oct 24
Oxaliplatin Related Compound D (cis-[(1S,2S)-1,2-cyclohexanediamine-N,N'][oxalato(2-)-O,O']platinum) REF: 45-1481248CAS: 61758-77-8	- - -	To inquire	Tue 15 Oct 24
Methotrexate Related Compound E (4-{[(2,4-Diaminopteridin-6-yl)methyl](methyl)amino}benzoic acid, hemihydrochloride) REF: 45-1414058CAS: 70844-48-3	- - -	1,552.00 €	Tue 15 Oct 24

+ info

Zidovudine Related Compound C (thymine)

CAS:65-71-4

Compounds containing a pyrimidine ring (whether or not

Formula:

C₅H₆N₂O₂

Color and Shape:

Powder

Molecular weight:

126.04293

Ref: 45-1724532

Estimated delivery in United States, on Tuesday 15 Oct 2024

+ info

Gatifloxacin Related Compound E (1-Cyclopropyl-6-fluoro-8-methoxy-7-(2-methylpiperazin-1-yl)-4-oxo-1,4-dihydroquinoline-3-carboxylic acid monohydrochloride)

CAS:1219097-41-2

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

Formula:

C₁₉H₂₂FN₃O₄·HCl

Color and Shape:

Solid

Molecular weight:

411.13611

Ref: 45-1288452

Estimated delivery in United States, on Tuesday 15 Oct 2024

+ info

Fosinopril Related Compound B ((4S)-4-Cyclohexyl-1-[(R)-[(S)-1-hydroxy-2-methylpropoxy](4-phenylbutyl)phosphinyl]acetyl-D-proline propionate (ester), hemibarium salt, sesquihydrate)

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

Formula:

C₃₀H₄₅NO₇PBaH₂O

Color and Shape:

Powder

Molecular weight:

562.29336

Ref: 45-1283426

Estimated delivery in United States, on Tuesday 15 Oct 2024

+ info

Methylprednisolone Hemisuccinate Related Compound B (11β,21-Dihydroxy-6α-methyl-3,20-dioxopregna-1,4-dien-17-yl hydrogen succinate)

CAS:77074-42-1

Carboxylic acids with additional oxygen function and their anhydrides, halides, peroxides etc not elsewhere specified …

Formula:

C₂₆H₃₄O₈

Color and Shape:

White Solid

Molecular weight:

474.22537

Ref: 45-1437020

Estimated delivery in United States, on Tuesday 15 Oct 2024

+ info

Valacyclovir Related Compound E (2-[(2-amino-6-oxo-1,6-dihydro-9H-purin-9-yl)methoxy]ethyl N-[(ben…

+ info

Valacyclovir Related Compound E (2-[(2-amino-6-oxo-1,6-dihydro-9H-purin-9-yl)methoxy]ethyl N-[(benzyloxy)carbonyl]-L-valinate)

CAS:124832-31-1

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

Formula:

C₂₁H₂₆N₆O₆

Color and Shape:

White Crystalline Powder

Molecular weight:

458.19138

Ref: 45-1707872

Estimated delivery in United States, on Tuesday 15 Oct 2024

+ info

Decitabine Related Compounds B and C Mixture (4-Amino-1-(3,5-di-O-(4-chlorobenzoyl)-2-deoxy-β-D-ribofuranosyl)-1,3,5-triazin-2(1H)-one and 4-Amino-1-(3,5-di-O-(4-chlorobenzoyl)-2-deoxy-a-D-ribofuranosyl)-1,3,5-triazin-2(1H)-one)

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

Formula:

C₂₂H₁₈Cl₂N₄O₆andC₂₂H₁₈Cl₂N₄O₆

Color and Shape:

White Powder

Molecular weight:

504.06034

Ref: 45-1165226

Estimated delivery in United States, on Tuesday 15 Oct 2024

+ info

Brinzolamide Related Compound B ((R)-4-Amino-2-(3-methoxypropyl)-3,4-dihydro-2H-thieno[3,2-e][1,2]thiazine-6-sulfonamide 1,1-dioxide oxalate)

Sulfonamides, nesoi

Formula:

C₁₀H₁₇N₃O₅S₃·C₂H₂O₄

Color and Shape:

Off-White Solid

Molecular weight:

445.49

Ref: 45-1076385

Estimated delivery in United States, on Tuesday 15 Oct 2024

+ info

Risedronate Related Compound A ([1-Hydroxy-2-(2-pyridinyl)ethylidene]bis(phosphonic acid), monohydrate)

CAS:1220806-40-5

Compounds containing an unfused pyridine ring in the structure, nesoi

Formula:

C₇H₁₁NO₇P₂·H₂O

Color and Shape:

White Crystalline Powder

Molecular weight:

301.01164

Ref: 45-1604621

Estimated delivery in United States, on Tuesday 15 Oct 2024

+ info

Orphenadrine Related Compound B (N-Ethyl-N,N-dimethyl-2-[phenyl(o-tolyl)methoxy]ethanaminium chloride; also known as N-Ethyl-N,N-dimethyl-2-[phenyl(2-tolyl)methoxy]ethanaminium chloride)

CAS:93940-17-1

Quaternary ammonium salts and hydroxides, whether or not chemically defined, other

Formula:

C₂₀H₂₈ClNO

Color and Shape:

White Off-White Powder

Molecular weight:

333.18594

Ref: 45-1479020

Estimated delivery in United States, on Tuesday 15 Oct 2024

+ info

Modafinil Related Compound A (2-[(diphenylmethyl)sulfinyl]acetic acid)

CAS:63547-24-0

Other aromatic organo-sulfur compounds (excluding pesti

Formula:

C₁₅H₁₄O₃S

Color and Shape:

Off-White Powder

Molecular weight:

274.06637

Ref: 45-1445346

Estimated delivery in United States, on Tuesday 15 Oct 2024

+ info

Dopamine Related Compound B (4-(2-Aminoethyl)-2-methoxyphenol hydrochloride)

CAS:1477-68-5

Amino-naphthols and other amino-phenols, their ethers and esters, other than those cont more than one …

Formula:

C₉H₁₃NO₂·HCl

Color and Shape:

Off-White Solid

Molecular weight:

203.07131

Ref: 45-1225226

Estimated delivery in United States, on Tuesday 15 Oct 2024

+ info

+ info

2-Amino-5-chlorobenzophenone

CAS:719-59-5

Amino-aldehydes, amino-ketones and amino-quinones, other than those containing more than one kind of oxygen function; …

Formula:

C₁₃H₁₀ClNO

Color and Shape:

Yellow Crystalline Powder

Molecular weight:

231.04509

Ref: 45-1022808

Estimated delivery in United States, on Tuesday 15 Oct 2024

+ info

Levalbuterol Related Compound F ((R)-1-[4-(Benzyloxy)-3-(hydroxymethyl)phenyl]-2-(tert-butylamino)…

+ info

Levalbuterol Related Compound F ((R)-1-[4-(Benzyloxy)-3-(hydroxymethyl)phenyl]-2-(tert-butylamino)ethan-1-ol)

CAS:174607-68-2

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

Formula:

C₂₀H₂₇N₀₃

Color and Shape:

White Off-White Solid

Molecular weight:

309.2205

Ref: 45-1358842

Estimated delivery in United States, on Tuesday 15 Oct 2024

+ info

Allopurinol Related Compound F (ethyl-(E/Z)-3-(2-carbethoxy-2-cyanoethenyl)amino-1H-pyrazole-4-carboxylate)

CAS:321571-07-7

Compounds containing an unfused pyrazole ring, whether or not hydrogenated, in the structure, nesoi

Formula:

C₁₂H₁₄N₄O₄

Color and Shape:

Powder

Molecular weight:

278.1015

Ref: 45-1013079

Estimated delivery in United States, on Tuesday 15 Oct 2024

+ info

2-Mononitroglycerin

CAS:620-12-2

Esters of other inorganic acids of nonmetals & their salts, their halogenated/sulfonated/nitrated/nitrosated derivs, except of …

Formula:

C₃H₇NO₅

Color and Shape:

Clear Colorless Liquid

Molecular weight:

137.03242

Ref: 45-1445584

Estimated delivery in United States, on Tuesday 15 Oct 2024

+ info

Metoprolol Related Compound A ((+/-)1-(ethylamino)-3-[4-(2-methoxyethyl)phenoxy]-propan-2-ol)

CAS:109632-08-8

Amino-alcohols, other than those containing more than one kind of oxygen function, their ethers and …

Formula:

C₁₄H₂₃NO₃

Color and Shape:

White Clumpy Powder

Molecular weight:

253.16779

Ref: 45-1441232

Estimated delivery in United States, on Tuesday 15 Oct 2024

+ info

Sulfamethoxazole Related Compound B (4-amino-N-{4-[N-(5-methylisoxazol-3-yl)sulfamoyl]phenyl}benzenesulfonamide)

CAS:135529-16-7

Sulfonamides, nesoi

Formula:

C₁₆H₁₆N₄O₅S₂

Color and Shape:

Off-White White Powder

Molecular weight:

408.05621

Ref: 45-1631522

Estimated delivery in United States, on Tuesday 15 Oct 2024

+ info

Famciclovir Related Compound A (2-[2-(2-Amino-9H-purin-9-yl)ethyl]propane-1,3-diol] hydrochloride)

CAS:246021-75-0

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

Formula:

C₁₀H₁₅N₅O₂·HCl

Color and Shape:

Cream Off-White Solid

Molecular weight:

237.12257

Ref: 45-1269174

Estimated delivery in United States, on Tuesday 15 Oct 2024

+ info

Oxaliplatin Related Compound D (cis-[(1S,2S)-1,2-cyclohexanediamine-N,N'][oxalato(2-)-O,O']platinum)

CAS:61758-77-8

Inorganic or organic compounds of precious metals, whether or not chemically defined, or amalgams of …

Formula:

C₈H₁₄N₂O₄Pt

Color and Shape:

White Off-White Crystalline Powder

Molecular weight:

397.06015

Ref: 45-1481248

Estimated delivery in United States, on Tuesday 15 Oct 2024

+ info

Methotrexate Related Compound E (4-{[(2,4-Diaminopteridin-6-yl)methyl](methyl)amino}benzoic acid, …

+ info

Methotrexate Related Compound E (4-{[(2,4-Diaminopteridin-6-yl)methyl](methyl)amino}benzoic acid, hemihydrochloride)

CAS:70844-48-3

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

Formula:

C₁₅H₁₅N₇O₂·5HCl

Color and Shape:

Yellow Tan Orange Solid

Molecular weight:

325.12872

Ref: 45-1414058

Estimated delivery in United States, on Tuesday 15 Oct 2024

+ info