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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

3-(1-Benzylpiperidin-3-yl) 5-methyl 2,6-dimethyl-4-(3-nitrophenyl)-1,4-dihydropyridine-3,5-dicarboxylate chemical structure

3-(1-Benzylpiperidin-3-yl) 5-methyl 2,6-dimethyl-4-(3-nitrophenyl)-1,4-dihydropyridine-3,5-dicarboxylate

CAS: 91599-75-6
Formula: C₂₈H₃₁N₃O₆
MW: 505.6 g/mol

VQ-024534

Reference Standard

3-(1-Ethyl-1H-1,2,4-triazol-3-yl)-2-methoxyaniline

3-(1-Ethyl-1H-1,2,4-triazol-3-yl)-2-methoxyaniline

CAS: 2948391-22-6
Formula: C₁₁H₁₄N₄O
MW: 218.26 g/mol

VQ-030145

Reference Standard

3-(1-Hydroxy-2-(methylamino)ethyl)phenol chemical structure

3-(1-Hydroxy-2-(methylamino)ethyl)phenol

CAS: 1477-63-0
Formula: C₉H₁₃NO₂
MW: 167.2 g/mol

VQ-030619

Reference Standard

3-(1-Hydroxyethyl)-N-phenylbenzenesulfonamide

3-(1-Hydroxyethyl)-N-phenylbenzenesulfonamide

CAS: 1156910-66-5
Formula: C₁₄H₁₅NO₃S
MW: 277.34 g/mol

VQ-045107

Reference Standard

3-(1-Hydroxyethyl)benzophenone chemical structure

3-(1-Hydroxyethyl)benzophenone

CAS: 67173-18-6
Formula: C₁₅H₁₄O₂
MW: 226.27 g/mol

VQ-037811

Reference Standard

3-(1-Methoxyethyl)benzophenone chemical structure

3-(1-Methoxyethyl)benzophenone

CAS: 2731671-45-5
Formula: C₁₆H₁₆O₂
MW: 240.3 g/mol

VQ-031382

Reference Standard

3-(1-Naphthalenyloxy)-1-phenyl-1-propanol chemical structure

3-(1-Naphthalenyloxy)-1-phenyl-1-propanol

CAS: 908291-72-5
Formula: C₁₉H₁₈O₂
MW: 278.3 g/mol

VQ-022311

Reference Standard

3-(1-Naphthoxy)lactic acid chemical structure

3-(1-Naphthoxy)lactic acid

CAS: 10476-54-7
Formula: C₁₃H₁₂O₄
MW: 232.23 g/mol

VQ-039201

Reference Standard

3-(1-Nitrosopyrrolidin-2-yl)pyridine-2,4,5,6-d4 chemical structure

3-(1-Nitrosopyrrolidin-2-yl)pyridine-2,4,5,6-d4

CAS: 66148-19-4
Formula: C₉H₁₁N₃O
MW: 181.23 g/mol

VQ-038622

Reference Standard

3-(1,3-Dicyclohexylureido)-3-oxopropanoic Acid chemical structure

3-(1,3-Dicyclohexylureido)-3-oxopropanoic Acid

CAS: 2883118-63-4
Formula: C₁₆H₂₆N₂O₄
MW: 310.39 g/mol

VQ-030037

Reference Standard

3-(1,3-Dihydro-1-oxo-2H-isoindol-2-yl)-2,6-piperidinedione chemical structure

3-(1,3-Dihydro-1-oxo-2H-isoindol-2-yl)-2,6-piperidinedione

CAS: 26581-81-7
Formula: C₁₃H₁₂N₂O₃
MW: 244.25 g/mol

VQ-028320

Reference Standard

3-(1,3,2-Dioxaborinan-2-yl)benzonitrile chemical structure

3-(1,3,2-Dioxaborinan-2-yl)benzonitrile

CAS: 684648-40-6
Formula: C₁₀H₁₀BNO₂
MW: 187 g/mol

VQ-041407

Reference Standard

3-(1,3,3-Trimethyl-1,2,3,6-tetrahydropyridin-4-yl)phenol chemical structure

3-(1,3,3-Trimethyl-1,2,3,6-tetrahydropyridin-4-yl)phenol

CAS: 2250243-53-7
Formula: C₁₄H₁₉NO
MW: 217.31 g/mol

VQ-035253

Reference Standard

3-(1,3,3-Trimethylureido)phenyl dimethylcarbamate chemical structure

3-(1,3,3-Trimethylureido)phenyl dimethylcarbamate

CAS: 2434689-89-9
Formula: C₁₃H₁₉N₃O₃
MW: 265.31 g/mol

VQ-032102

Reference Standard

3-(1H-Imidazol-1-yl)-5-(trifluoromethyl)aniline chemical structure

3-(1H-Imidazol-1-yl)-5-(trifluoromethyl)aniline

CAS: 943320-48-7
Formula: C₁₀H₈F₃N₃
MW: 227.19 g/mol

VQ-023258

Reference Standard

3-(2-(3,4-Dimethoxybenzoyl)-4,5-dimethoxyphenyl)pentan-2-one chemical structure

3-(2-(3,4-Dimethoxybenzoyl)-4,5-dimethoxyphenyl)pentan-2-one

CAS: 15462-91-6
Formula: C₂₂H₂₆O₆
MW: 386.4 g/mol

VQ-034315

Reference Standard

3-(2-(Trifluoromethyl)phenyl)propan-1-ol chemical structure

3-(2-(Trifluoromethyl)phenyl)propan-1-ol

CAS: 191155-81-4
Formula: C₁₀H₁₁F₃O
MW: 204.19 g/mol

VQ-036323

Reference Standard

3-(2-Amino-2-oxo-1,1-diphenylethyl)-1-(2-(2,3-dihydrobenzofuran-5-yl)ethyl)pyrrolidine 1-oxide chemical structure

3-(2-Amino-2-oxo-1,1-diphenylethyl)-1-(2-(2,3-dihydrobenzofuran-5-yl)ethyl)pyrrolidine 1-oxide

CAS: 2416229-88-2
Formula: C₂₈H₃₀N₂O₃
MW: 442.5 g/mol

VQ-047951

Reference Standard

3-(2-Bromo-4,5-dimethoxyphenyl)propanenitrile chemical structure

3-(2-Bromo-4,5-dimethoxyphenyl)propanenitrile

CAS: 35249-62-8
Formula: C₁₁H₁₂BrNO₂
MW: 270.12 g/mol

VQ-039913

Reference Standard

3-(2-Bromoacetyl)-10,11-dihydro-5H-dibenzo[c,g]chromen-8(9H)-one chemical structure

3-(2-Bromoacetyl)-10,11-dihydro-5H-dibenzo[c,g]chromen-8(9H)-one

CAS: 1378390-29-4
Formula: C₁₉H₁₅BrO₃
MW: 371.2 g/mol

VQ-034561

Reference Standard

3-(2-Bromoacetyl)-5-chlorothiophene-2-sulfonamide chemical structure

3-(2-Bromoacetyl)-5-chlorothiophene-2-sulfonamide

CAS: 160982-11-6
Formula: C₆H₅BrClNO₃S₂
MW: 318.6 g/mol

VQ-047623

Reference Standard

3-(2-Chloro-4-(cyclopentylamino)pyrimidin-5-yl)but-2-enoic acid chemical structure

3-(2-Chloro-4-(cyclopentylamino)pyrimidin-5-yl)but-2-enoic acid

CAS: 2242625-36-9
Formula: C₁₃H₁₆ClN₃O₂
MW: 281.74 g/mol

VQ-041310

Reference Standard

3-(2-Chloro-4-(cyclopentylamino)pyrimidin-5-yl)prop-2-yn-1-ol chemical structure

3-(2-Chloro-4-(cyclopentylamino)pyrimidin-5-yl)prop-2-yn-1-ol

CAS: 1374639-76-5
Formula: C₁₂H₁₄ClN₃O
MW: 251.71 g/mol

VQ-041891

Reference Standard

3-(2-Chloroethyl)-1-cyclohexyl-1-nitrosourea chemical structure

3-(2-Chloroethyl)-1-cyclohexyl-1-nitrosourea

CAS: 54749-91-6
Formula: C₉H₁₆ClN₃O₂
MW: 233.69 g/mol

VQ-038107

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