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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

2-[4-(Hydroxymethyl)phenyl]propanoic Acid chemical structure

2-[4-(Hydroxymethyl)phenyl]propanoic Acid

CAS: 88416-60-8
Formula: C₁₀H₁₂O₃
MW: 180.2 g/mol

VQ-038178

Reference Standard

2-[4-[2-(1-Piperidinyl)ethoxy]benzoyl]benzoic Acid chemical structure

2-[4-[2-(1-Piperidinyl)ethoxy]benzoyl]benzoic Acid

CAS: 130566-58-4
Formula: C₂₁H₂₃NO₄
MW: 353.4 g/mol

VQ-027542

Reference Standard

2-[5-(4-Bromophenyl)-6-chloropyrimidin-4-yl]oxyethanol chemical structure

2-[5-(4-Bromophenyl)-6-chloropyrimidin-4-yl]oxyethanol

CAS: 1642873-04-8
Formula: C₁₂H₁₀BrClN₂O₂
MW: 329.57 g/mol

VQ-043218

Reference Standard

2-[6-(Acetylphenylamino)-1,3,5-hexatrienyl]-1,1-dimethyl-3-sulfobutyl-1H-benz[e]indolium Inner Salt chemical structure

2-[6-(Acetylphenylamino)-1,3,5-hexatrienyl]-1,1-dimethyl-3-sulfobutyl-1H-benz[e]indolium Inner Salt

CAS: 63450-66-8
Formula: C₃₂H₃₄N₂O₄S
MW: 542.7 g/mol

VQ-032693

Reference Standard

2-[6-Methyl-2-(4-methylphenyl)imidazo- [1,2-a]pyridin-3-yl]acetamide chemical structure

2-[6-Methyl-2-(4-methylphenyl)imidazo- [1,2-a]pyridin-3-yl]acetamide

CAS: 365213-58-7
Formula: C₁₇H₁₇N₃O
MW: 279.34 g/mol

VQ-044863

Reference Standard

2-{[(1S,2S)-1-Hydroxy-1-phenylpropan-2-yl](methyl)amino}acetic acid chemical structure

2-{[(1S,2S)-1-Hydroxy-1-phenylpropan-2-yl](methyl)amino}acetic acid

CAS: 128779-50-0
Formula: C₁₂H₁₇NO₃
MW: 223.27 g/mol

VQ-040536

Reference Standard

2-{[(4R)-4-Aminopentyl](ethyl)amino}ethan-1-ol chemical structure

2-{[(4R)-4-Aminopentyl](ethyl)amino}ethan-1-ol

CAS: 159346-86-8
Formula: C₉H₂₂N₂O
MW: 174.28 g/mol

VQ-044441

Reference Standard

2-{2-Chloro-4-mesyl-3-[(2,2,2-trifluoroethoxy)methyl]benzoyl}-4,6-dihydroxycyclohexane-1,3-dione chemical structure

2-{2-Chloro-4-mesyl-3-[(2,2,2-trifluoroethoxy)methyl]benzoyl}-4,6-dihydroxycyclohexane-1,3-dione

CAS: 912654-91-2
Formula: C₁₇H₁₆ClF₃O₈S
MW: 472.8 g/mol

VQ-042402

Reference Standard

2-Acetamido-2-(4-hydroxyphenyl)acetic Acid chemical structure

2-Acetamido-2-(4-hydroxyphenyl)acetic Acid

CAS: 37784-25-1
Formula: C₁₀H₁₁NO₄
MW: 209.2 g/mol

VQ-029148

Reference Standard

2-Acetamido-4-hydroxybenzoic acid chemical structure

2-Acetamido-4-hydroxybenzoic acid

CAS: 99358-07-3
Formula: C₉H₉NO₄
MW: 195.17 g/mol

VQ-031795

Reference Standard

2-Acetamido-5-chlorobenzenesulfonic acid chemical structure

2-Acetamido-5-chlorobenzenesulfonic acid

CAS: 54981-41-8
Formula: C₈H₈ClNO₄S
MW: 249.67 g/mol

VQ-022360

Reference Standard

2-Acetamido-5-chlorosulfonyl-1,3,4-thiadiazole chemical structure

2-Acetamido-5-chlorosulfonyl-1,3,4-thiadiazole

CAS: 32873-57-7
Formula: C₄H₄ClN₃O₃S₂
MW: 241.7 g/mol

VQ-035381

Reference Standard

2-Acetamido-5-mercapto-1,3,4-thiadiazole-D3 chemical structure

2-Acetamido-5-mercapto-1,3,4-thiadiazole-D3

CAS: 1246816-83-0
Formula: C₄H₅N₃OS₂
MW: 178.3 g/mol

VQ-043371

Reference Standard

2-Acetoxy-N-(2-thiazolyl)benzamide chemical structure

2-Acetoxy-N-(2-thiazolyl)benzamide

CAS: 402848-76-4
Formula: C₁₂H₁₀N₂O₃S
MW: 262.29 g/mol

VQ-023270

Reference Standard

2-Acetoxybenzoic 2-hydroxybenzoic anhydride

2-Acetoxybenzoic 2-hydroxybenzoic anhydride

CAS: 2708578-72-5
Formula: C₁₆H₁₂O₆
MW: 300.3 g/mol

VQ-029005

Reference Standard

2-Acetoxymethyl-5-Hydroxymethyl-4-Methoxy-3-Methylpyridine chemical structure

2-Acetoxymethyl-5-Hydroxymethyl-4-Methoxy-3-Methylpyridine

CAS: 120003-77-2
Formula: C₁₁H₁₅NO₄
MW: 225.24 g/mol

VQ-049321

Reference Standard

2-Acetyl Phenothiazine chemical structure

2-Acetyl Phenothiazine

CAS: 6631-94-3
Formula: C₁₄H₁₁NOS
MW: 241.31 g/mol

VQ-029002

Reference Standard

2-Acetyl-5-chlorothiophene chemical structure

2-Acetyl-5-chlorothiophene

CAS: 6310-09-4
Formula: C₆H₅ClOS
MW: 160.62 g/mol

VQ-041946

Reference Standard

2-Acetyl-N,N,N,4-tetramethyl-1-pentanaminium Iodide chemical structure

2-Acetyl-N,N,N,4-tetramethyl-1-pentanaminium Iodide

CAS: 1069-62-1
Formula: C₁₁H₂₄INO
MW: 313.22 g/mol

VQ-034158

Reference Standard

2-Acetyloxymethyl-3-methyl-4-(methoxypropoxy)pyridine chemical structure

2-Acetyloxymethyl-3-methyl-4-(methoxypropoxy)pyridine

CAS: 117977-19-2
Formula: C₁₃H₁₉NO₄
MW: 253.29 g/mol

VQ-041811

Reference Standard

2-Acetyloxymethyl-3,5-dimethyl-4-nitropyridine chemical structure

2-Acetyloxymethyl-3,5-dimethyl-4-nitropyridine

CAS: 142885-95-8
Formula: C₁₀H₁₂N₂O₄
MW: 224.21 g/mol

VQ-049319

Reference Standard

2-Acetylthiazole chemical structure

2-Acetylthiazole

CAS: 24295-03-2
Formula: C₅H₅NOS
MW: 127.17 g/mol

VQ-032395

Reference Standard

2-Acetylthiazole-4-carboxylic acid chemical structure

2-Acetylthiazole-4-carboxylic acid

CAS: 13139-47-4
Formula: C₆H₅NO₃S
MW: 171.18 g/mol

VQ-045084

Reference Standard

2-Adamantanol chemical structure

CAS: 700-57-2
Formula: C₁₀H₁₆O
MW: 152.23 g/mol

VQ-029028

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