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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-(4-Chlorophenyl)pentanediamide chemical structure

3-(4-Chlorophenyl)pentanediamide

CAS: 1195277-58-7
Formula: C₁₁H₁₃ClN₂O₂
MW: 240.68 g/mol

VQ-024490

Reference Standard

3-(4-Chlorophenyl)pentanedioic acid chemical structure

3-(4-Chlorophenyl)pentanedioic acid

CAS: 35271-74-0
Formula: C₁₁H₁₁ClO₄
MW: 242.65 g/mol

VQ-021727

Reference Standard

3-(4-Chlorophenyl)propyl Mesylate chemical structure

3-(4-Chlorophenyl)propyl Mesylate

CAS: 61440-60-6
Formula: C₁₀H₁₃ClO₃S
MW: 248.73 g/mol

VQ-033236

Reference Standard

3-(4-Hydroxy-3-methoxyphenyl)-2-methylpropanoic acid chemical structure

3-(4-Hydroxy-3-methoxyphenyl)-2-methylpropanoic acid

CAS: 53832-93-2
Formula: C₁₁H₁₄O₄
MW: 210.23 g/mol

VQ-041127

Reference Standard

3-(4-Hydroxyphenyl)propionic acid chemical structure

3-(4-Hydroxyphenyl)propionic acid

CAS: 501-97-3
Formula: C₉H₁₀O₃
MW: 166.17 g/mol

VQ-029818

Reference Standard

3-(4-Iodobutyl)-1H-indole-5-carbonitrile chemical structure

3-(4-Iodobutyl)-1H-indole-5-carbonitrile

CAS: 692756-88-0
Formula: C₁₃H₁₃IN₂
MW: 324.16 g/mol

VQ-044535

Reference Standard

3-(4-Isobutylphenyl)propanal chemical structure

3-(4-Isobutylphenyl)propanal

CAS: 40764-03-2
Formula: C₁₃H₁₈O
MW: 190.28 g/mol

VQ-048622

Reference Standard

3-(4-Methoxybenzoyl)propionic acid chemical structure

3-(4-Methoxybenzoyl)propionic acid

CAS: 3153-44-4
Formula: C₁₁H₁₂O₄
MW: 208.21 g/mol

VQ-021460

Reference Standard

3-(4-Methoxyphenyl)-N,N-dimethyl-3-(pyridin-2-yl)propan-1-amine chemical structure

3-(4-Methoxyphenyl)-N,N-dimethyl-3-(pyridin-2-yl)propan-1-amine

CAS: 688361-91-3
Formula: C₁₇H₂₂N₂O
MW: 270.37 g/mol

VQ-036258

Reference Standard

3-(4-Methyl-1H-imidazol-1-yl)-5-(trifluoromethyl)benzamide chemical structure

3-(4-Methyl-1H-imidazol-1-yl)-5-(trifluoromethyl)benzamide

CAS: 917391-28-7
Formula: C₁₂H₁₀F₃N₃O
MW: 269.22 g/mol

VQ-044167

Reference Standard

3-(4-Methyl-1H-imidazol-1-yl)-5-(trifluoromethyl)benzonitrile chemical structure

3-(4-Methyl-1H-imidazol-1-yl)-5-(trifluoromethyl)benzonitrile

CAS: 641571-12-2
Formula: C₁₂H₈F₃N₃
MW: 251.21 g/mol

VQ-044166

Reference Standard

3-(4-Methyl-1H-imidazol-1-yl)-5-trifluoromethylaniline-d3 chemical structure

3-(4-Methyl-1H-imidazol-1-yl)-5-trifluoromethylaniline-d3

CAS: 1246815-34-8
Formula: C₁₁H₁₀F₃N₃
MW: 244.23 g/mol

VQ-049249

Reference Standard

3-(4-Trifluoromethyl phenyl)propan-1-ol chemical structure

3-(4-Trifluoromethyl phenyl)propan-1-ol

CAS: 180635-74-9
Formula: C₁₀H₁₁F₃O
MW: 204.19 g/mol

VQ-036313

Reference Standard

3-(5-(2-Methoxyphenyl)-1,2,4-oxadiazol-3-yl)benzoic acid chemical structure

3-(5-(2-Methoxyphenyl)-1,2,4-oxadiazol-3-yl)benzoic acid

CAS: 775304-03-5
Formula: C₁₆H₁₂N₂O₄
MW: 296.28 g/mol

VQ-035807

Reference Standard

3-(5-(3-Fluorophenyl)-1,2,4-oxadiazol-3-yl)benzoic Acid chemical structure

3-(5-(3-Fluorophenyl)-1,2,4-oxadiazol-3-yl)benzoic Acid

CAS: 775304-56-8
Formula: C₁₅H₉FN₂O₃
MW: 284.24 g/mol

VQ-035806

Reference Standard

3-(5-Amino-2-bromo-4-fluorophenyl)-1-ethyl-7-(methylamino)-1,6-naphthyridin-2(1H)-one chemical structure

3-(5-Amino-2-bromo-4-fluorophenyl)-1-ethyl-7-(methylamino)-1,6-naphthyridin-2(1H)-one

CAS: 1442470-53-2
Formula: C₁₇H₁₆BrFN₄O
MW: 391.2 g/mol

VQ-041927

Reference Standard

3-(5-Methoxy-2,6-dimethyl-9-oxo-3,4,7,9-tetrahydro-2H-furo[3,4-h]chromen-2-yl)propanoic Acid chemical structure

3-(5-Methoxy-2,6-dimethyl-9-oxo-3,4,7,9-tetrahydro-2H-furo[3,4-h]chromen-2-yl)propanoic Acid

CAS: 24243-38-7
Formula: C₁₇H₂₀O₆
MW: 320.3 g/mol

VQ-026807

Reference Standard

3-(5-Methyl-1H-imidazol-1-yl)-5-(trifluoromethyl)benzoic Acid chemical structure

3-(5-Methyl-1H-imidazol-1-yl)-5-(trifluoromethyl)benzoic Acid

CAS: 641571-18-8
Formula: C₁₂H₉F₃N₂O₂
MW: 270.21 g/mol

VQ-038643

Reference Standard

3-(5-Methyl-3-phenylisoxazol-4-yl)benzenesulfonamide chemical structure

3-(5-Methyl-3-phenylisoxazol-4-yl)benzenesulfonamide

CAS: 386273-25-2
Formula: C₁₆H₁₄N₂O₃S
MW: 314.4 g/mol

VQ-027393

Reference Standard

3-(5,5-DiMethyl-2-oxo-1,3,2-dioxaphorinane-2-yl)-4-(3-nitrophenyl)-bu-3-en-2-one chemical structure

3-(5,5-DiMethyl-2-oxo-1,3,2-dioxaphorinane-2-yl)-4-(3-nitrophenyl)-bu-3-en-2-one

CAS: 111011-78-0
Formula: C₁₅H₁₈NO₆P
MW: 339.28 g/mol

VQ-032389

Reference Standard

3-(6-(1-(6-Chloro-5-fluoropyrimidin-4-yl)ethyl)-5-fluoropyrimidin-4-yl)-2-(2,4-difluorophenyl)-1-(1H-1,2,4-triazol-1-yl)butan-2-ol chemical structure

3-(6-(1-(6-Chloro-5-fluoropyrimidin-4-yl)ethyl)-5-fluoropyrimidin-4-yl)-2-(2,4-difluorophenyl)-1-(1H-1,2,4-triazol-1-yl)butan-2-ol

CAS: 321588-94-7
Formula: C₂₂H₁₈ClF₄N₇O
MW: 507.9 g/mol

VQ-028750

Reference Standard

3-(6-Chloropyrimidin-4-yl)-2-(2,4-difluorophenyl)-1-(1H-1,2,4-triazol-1-yl)butan-2-ol

3-(6-Chloropyrimidin-4-yl)-2-(2,4-difluorophenyl)-1-(1H-1,2,4-triazol-1-yl)butan-2-ol

CAS: 188416-44-6
Formula: C₁₆H₁₄ClF₂N₅O
MW: 365.77 g/mol

VQ-042942

Reference Standard

3-(6-Methylpyridin-3-yl)-2-(4-(methylthio)phenyl)-3-oxopropanenitrile chemical structure

3-(6-Methylpyridin-3-yl)-2-(4-(methylthio)phenyl)-3-oxopropanenitrile

CAS: 321913-54-6
Formula: C₁₆H₁₄N₂OS
MW: 282.4 g/mol

VQ-048317

Reference Standard

3-(6,7-Dibromo-2,3-dihydrobenzofuran-5-yl)propanoic Acid chemical structure

3-(6,7-Dibromo-2,3-dihydrobenzofuran-5-yl)propanoic Acid

CAS: 196597-76-9
Formula: C₁₁H₁₀Br₂O₃
MW: 350 g/mol

VQ-033439

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