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Impurities & Reference Standards

Pharmacopoeial and non-pharmacopoeial impurities, metabolites, nitrosamines and working standards with characterisation data for QC and regulatory work.

27,990products

6sub-categories

2,746in stock

COA + SDSwith every lot

API Impurities 14,098 Pharmacopeial Impurities (EP / USP / BP) 4,399 Nitrosamine Impurities 631 Stable Isotope Labelled Standards (Deuterated, 13C, 15N) 1,504 Metabolites & Degradation Products 3,922 API Reference Standards 3,436

Reference Standard

1-Cyano-6-(methylsulfonyl)-9H-xanthen-9-one chemical structure

1-Cyano-6-(methylsulfonyl)-9H-xanthen-9-one

CAS: 2518311-22-1
Formula: C₁₅H₉NO₄S
MW: 299.3 g/mol

VQ-043521

Reference Standard

1-Cyclohexyl-2-(trifluoromethyl)benzene chemical structure

1-Cyclohexyl-2-(trifluoromethyl)benzene

CAS: 13376-27-7
Formula: C₁₃H₁₅F₃
MW: 228.25 g/mol

VQ-028046

Reference Standard

1-Cyclopentyl-4-nitrosopiperazine chemical structure

1-Cyclopentyl-4-nitrosopiperazine

CAS: 61379-66-6
Formula: C₉H₁₇N₃O
MW: 183.25 g/mol

In stock

Reference Standard

1-Cyclopropyl-2-methylpropan-1-ol chemical structure

1-Cyclopropyl-2-methylpropan-1-ol

CAS: 17393-35-0
Formula: C₇H₁₄O
MW: 114.19 g/mol

VQ-041591

Reference Standard

1-Cyclopropyl-2-methylpropan-1-one chemical structure

1-Cyclopropyl-2-methylpropan-1-one

CAS: 6704-20-7
Formula: C₇H₁₂O
MW: 112.17 g/mol

VQ-041600

Reference Standard

1-Cyclopropyl-3-(2-fluoro-4-iodophenyl)urea chemical structure

1-Cyclopropyl-3-(2-fluoro-4-iodophenyl)urea

CAS: 871700-18-4
Formula: C₁₀H₁₀FIN₂O
MW: 320.1 g/mol

VQ-042641

Reference Standard

1-Cyclopropyl-6-fluoro-7-(3-hydroxy-5-oxopiperazin-1-yl)-4-oxo-1,4-dihydroquinoline-3-carboxylic Acid

1-Cyclopropyl-6-fluoro-7-(3-hydroxy-5-oxopiperazin-1-yl)-4-oxo-1,4-dihydroquinoline-3-carboxylic Acid

CAS: 1620445-08-0
Formula: C₁₇H₁₆FN₃O₅
MW: 361.3 g/mol

VQ-043866

Reference Standard

1-Cyclopropyl-6-fluoro-7-[[(3R)-hexahydro-1H-azepin-3-yl]amino]-1,4-dihydro-4-oxo-3-quinolinecarboxylic acid

1-Cyclopropyl-6-fluoro-7-[[(3R)-hexahydro-1H-azepin-3-yl]amino]-1,4-dihydro-4-oxo-3-quinolinecarboxylic acid

CAS: 2514676-36-7
Formula: C₁₉H₂₂FN₃O₃
MW: 359.4 g/mol

VQ-029408

Reference Standard

1-Cyclopropyl-6,7-difluoro-1,4-dihydro-8-methoxy-4-oxo-3-quinolinecarboxylic Acid Ethyl Ester chemical structure

1-Cyclopropyl-6,7-difluoro-1,4-dihydro-8-methoxy-4-oxo-3-quinolinecarboxylic Acid Ethyl Ester

CAS: 112811-71-9
Formula: C₁₆H₁₅F₂NO₄
MW: 323.29 g/mol

VQ-025962

Reference Standard

1-Cyclopropyl-6,7-difluoro-8-hydroxy-4-oxo-1,4-dihydro-quinoline-3-carboxylic Acid chemical structure

1-Cyclopropyl-6,7-difluoro-8-hydroxy-4-oxo-1,4-dihydro-quinoline-3-carboxylic Acid

CAS: 154093-72-8
Formula: C₁₃H₉F₂NO₄
MW: 281.21 g/mol

VQ-026783

Reference Standard

1-Cyclopropyl-6,7-difluoro-8-methoxy-4-oxo-1,4-dihydro-quinoline-3-carboxylic acid chemical structure

1-Cyclopropyl-6,7-difluoro-8-methoxy-4-oxo-1,4-dihydro-quinoline-3-carboxylic acid

CAS: 112811-72-0
Formula: C₁₄H₁₁F₂NO₄
MW: 295.24 g/mol

VQ-023180

Reference Standard

1-Cyclopropyl-6,7,8-trifluoro-1,4-dihydro-4-oxo-3-quinolinecarboxylic Acid chemical structure

1-Cyclopropyl-6,7,8-trifluoro-1,4-dihydro-4-oxo-3-quinolinecarboxylic Acid

CAS: 94695-52-0
Formula: C₁₃H₈F₃NO₃
MW: 283.2 g/mol

VQ-026785

Reference Standard

1-Cyclopropyl-6,7,8-trifluoro-1,4-dihydro-4-oxo-3-quinolinecarboxylic Acid Ethyl Ester chemical structure

1-Cyclopropyl-6,7,8-trifluoro-1,4-dihydro-4-oxo-3-quinolinecarboxylic Acid Ethyl Ester

CAS: 94242-51-0
Formula: C₁₅H₁₂F₃NO₃
MW: 311.25 g/mol

VQ-038517

Reference Standard

1-Demethylcolchicine chemical structure

1-Demethylcolchicine

CAS: 3464-68-4
Formula: C₂₁H₂₃NO₆
MW: 385.4 g/mol

VQ-044259

Reference Standard

1-Deoxy-L-altronojirimycin Hydrochloride chemical structure

1-Deoxy-L-altronojirimycin Hydrochloride

CAS: 355138-93-1
Formula: C₆H₁₄ClNO₄
MW: 199.63 g/mol

VQ-049111

Reference Standard

1-Deoxy-L-idonojirimycin chemical structure

1-Deoxy-L-idonojirimycin

CAS: 16647-80-6
Formula: C₆H₁₃NO₄
MW: 163.17 g/mol

VQ-045269

Reference Standard

1-Deoxygalactonojirimycin Tetrabenzyl Ether chemical structure

1-Deoxygalactonojirimycin Tetrabenzyl Ether

CAS: 167904-18-9
Formula: C₃₄H₃₇NO₄
MW: 523.7 g/mol

VQ-023132

Reference Standard

1-Descarbamoyl-2-carbamoyl Methocarbamol chemical structure

1-Descarbamoyl-2-carbamoyl Methocarbamol

CAS: 10488-39-8
Formula: C₁₁H₁₅NO₅
MW: 241.24 g/mol

VQ-026635

Reference Standard

1-Descyano 1-(4-Dimethylamino)oxobutyl Citadiol chemical structure

1-Descyano 1-(4-Dimethylamino)oxobutyl Citadiol

CAS: 1433278-32-0
Formula: C₂₅H₃₅FN₂O₃
MW: 430.6 g/mol

VQ-022203

Reference Standard

1-Epi-Darunavir chemical structure

1-Epi-Darunavir

CAS: 1546918-95-9
Formula: C₂₇H₃₇N₃O₇S
MW: 547.7 g/mol

VQ-036574

Reference Standard

1-epi-Edoxaban chemical structure

CAS: 500572-10-1
Formula: C₂₄H₃₀ClN₇O₄S
MW: 548.1 g/mol

VQ-025478

Reference Standard

1-Ethoxy-2-ethylbenzene chemical structure

1-Ethoxy-2-ethylbenzene

CAS: 29643-62-7
Formula: C₁₀H₁₄O
MW: 150.22 g/mol

VQ-027207

Reference Standard

1-Ethoxycarbonylcyclopropane-1-carboxylic Acid chemical structure

1-Ethoxycarbonylcyclopropane-1-carboxylic Acid

CAS: 3697-66-3
Formula: C₇H₁₀O₄
MW: 158.15 g/mol

VQ-044415

Reference Standard

1-Ethyl 3-methyl 2-(2-(2-amino-6-chloro-9H-purin-9-yl)ethyl)malonate chemical structure

1-Ethyl 3-methyl 2-(2-(2-amino-6-chloro-9H-purin-9-yl)ethyl)malonate

CAS: 1696426-78-4
Formula: C₁₃H₁₆ClN₅O₄
MW: 341.75 g/mol

VQ-033091

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