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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-(2-(m-Tolylthio)phenyl)piperazine chemical structure

1-(2-(m-Tolylthio)phenyl)piperazine

CAS: 1293489-69-6
Formula: C₁₇H₂₀N₂S
MW: 284.4 g/mol

VQ-042945

Reference Standard

1-(2-(o-Tolylthio)phenyl)piperazine chemical structure

1-(2-(o-Tolylthio)phenyl)piperazine

CAS: 1293489-71-0
Formula: C₁₇H₂₀N₂S
MW: 284.4 g/mol

VQ-034691

Reference Standard

1-(2-(p-Tolylthio)phenyl)piperazine chemical structure

1-(2-(p-Tolylthio)phenyl)piperazine

CAS: 508233-82-7
Formula: C₁₇H₂₀N₂S
MW: 284.4 g/mol

VQ-028758

Reference Standard

1-(2-Amino-4-hydroxypteridin-6-yl)propane-1,2-diol

1-(2-Amino-4-hydroxypteridin-6-yl)propane-1,2-diol

CAS: 304-95-0
Formula: C₉H₁₁N₅O₃
MW: 237.2 g/mol

VQ-033763

Reference Standard

1-(2-Amino-5-hydroxyphenyl)propan-1-one chemical structure

1-(2-Amino-5-hydroxyphenyl)propan-1-one

CAS: 35364-15-9
Formula: C₉H₁₁NO₂
MW: 165.19 g/mol

VQ-021962

Reference Standard

1-(2-Aminophenyl)-3-morpholino-5,6-dihydropyridin-2(1H)-one chemical structure

1-(2-Aminophenyl)-3-morpholino-5,6-dihydropyridin-2(1H)-one

CAS: 2444918-46-9
Formula: C₁₅H₁₉N₃O₂
MW: 273.33 g/mol

VQ-035761

Reference Standard

1-(2-Bromo-1-methyl-vinyl)-2,4-difluoro-benzene chemical structure

1-(2-Bromo-1-methyl-vinyl)-2,4-difluoro-benzene

CAS: 159276-59-2
Formula: C₉H₇BrF₂
MW: 233.05 g/mol

VQ-041565

Reference Standard

1-(2-Bromo-6-chlorophenyl)indolin-2-one chemical structure

1-(2-Bromo-6-chlorophenyl)indolin-2-one

CAS: 1219112-85-2
Formula: C₁₄H₉BrClNO
MW: 322.58 g/mol

VQ-048009

Reference Standard

1-(2-Bromoethyl)-2-(2-nitrovinyl)benzene chemical structure

1-(2-Bromoethyl)-2-(2-nitrovinyl)benzene

CAS: 120427-94-3
Formula: C₁₀H₁₀BrNO₂
MW: 256.1 g/mol

VQ-041998

Reference Standard

1-(2-Bromophenyl)piperazine chemical structure

1-(2-Bromophenyl)piperazine

CAS: 1011-13-8
Formula: C₁₀H₁₃BrN₂
MW: 241.13 g/mol

VQ-028755

Reference Standard

1-(2-Chloroethoxy)-2-methoxy benzene chemical structure

1-(2-Chloroethoxy)-2-methoxy benzene

CAS: 53815-60-4
Formula: C₉H₁₁ClO₂
MW: 186.63 g/mol

VQ-029672

Reference Standard

1-(2-Chloroethyl)-3,3-dicyclohexyl-1-nitrosourea chemical structure

1-(2-Chloroethyl)-3,3-dicyclohexyl-1-nitrosourea

CAS: 500545-48-2
Formula: C₁₅H₂₆ClN₃O₂
MW: 315.84 g/mol

VQ-031611

Reference Standard

1-(2-Chlorophenyl)-2-(1H-tetrazol-1-yl)ethan-1-one chemical structure

1-(2-Chlorophenyl)-2-(1H-tetrazol-1-yl)ethan-1-one

CAS: 1259059-68-1
Formula: C₉H₇ClN₄O
MW: 222.63 g/mol

VQ-042737

Reference Standard

1-(2-Chlorophenyl)-2-(1H-tetrazol-1-yl)ethyl carbamate chemical structure

1-(2-Chlorophenyl)-2-(1H-tetrazol-1-yl)ethyl carbamate

CAS: 913088-45-6
Formula: C₁₀H₁₀ClN₅O₂
MW: 267.67 g/mol

VQ-036219

Reference Standard

1-(2-Chlorophenyl)-2-(2H-tetrazol-2-yl)ethan-1-one chemical structure

1-(2-Chlorophenyl)-2-(2H-tetrazol-2-yl)ethan-1-one

CAS: 1259059-71-6
Formula: C₉H₇ClN₄O
MW: 222.63 g/mol

VQ-024900

Reference Standard

1-(2-Chlorophenyl)-4-nitrosopiperazine chemical structure

1-(2-Chlorophenyl)-4-nitrosopiperazine

CAS: 2221987-86-4
Formula: C₁₀H₁₂ClN₃O
MW: 225.67 g/mol

VQ-029658

Reference Standard

1-(2-Chlorophenyl)piperazine chemical structure

1-(2-Chlorophenyl)piperazine

CAS: 39512-50-0
Formula: C₁₀H₁₃ClN₂
MW: 196.67 g/mol

VQ-027521

Reference Standard

1-(2-Chlorophenyl)Piperazine Hydrochloride chemical structure

1-(2-Chlorophenyl)Piperazine Hydrochloride

CAS: 41202-32-8
Formula: C₁₀H₁₄Cl₂N₂
MW: 233.13 g/mol

VQ-041513

Reference Standard

1-(2-Chlorophenyl)propan-1-one chemical structure

1-(2-Chlorophenyl)propan-1-one

CAS: 6323-18-8
Formula: C₉H₉ClO
MW: 168.62 g/mol

VQ-029549

Reference Standard

1-(2-Deoxy-β-D-erythro-pentopyranosyl)-3-guanyl-urea chemical structure

1-(2-Deoxy-β-D-erythro-pentopyranosyl)-3-guanyl-urea

CAS: 570410-70-7
Formula: C₇H₁₄N₄O₄
MW: 218.21 g/mol

VQ-025220

Reference Standard

1-(2-Ethoxy-ethyl)-2-piperidin-4-yl-1H-benzimidazole chemical structure

1-(2-Ethoxy-ethyl)-2-piperidin-4-yl-1H-benzimidazole

CAS: 110963-63-8
Formula: C₁₆H₂₃N₃O
MW: 273.37 g/mol

VQ-024588

Reference Standard

1-(2-Ethoxyethyl)-2-(1-(2-ethoxyethyl)piperidin-4-yl)-1H-benzo[d]imidazole chemical structure

1-(2-Ethoxyethyl)-2-(1-(2-ethoxyethyl)piperidin-4-yl)-1H-benzo[d]imidazole

CAS: 2818982-86-2
Formula: C₂₀H₃₁N₃O₂
MW: 345.5 g/mol

VQ-024585

Reference Standard

1-(2-Ethoxyethyl)-2-(piperidin-4-yl)-1H-benzo[d]imidazole hydrochloride chemical structure

1-(2-Ethoxyethyl)-2-(piperidin-4-yl)-1H-benzo[d]imidazole hydrochloride

CAS: 1841081-72-8
Formula: C₁₆H₂₄ClN₃O
MW: 309.83 g/mol

VQ-024593

Reference Standard

1-(2-Ethoxyphenoxy)-3-((2-hydroxyethyl)amino)propan-2-ol chemical structure

1-(2-Ethoxyphenoxy)-3-((2-hydroxyethyl)amino)propan-2-ol

CAS: 35609-87-1
Formula: C₁₃H₂₁NO₄
MW: 255.31 g/mol

VQ-036844

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