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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.

28,554products

6sub-categories

2,746in stock

COA + SDSwith every lot

API Impurities 14,252 Pharmacopeial Impurities (EP / USP / BP) 4,401 Nitrosamine Impurities 650 Stable Isotope Labelled Standards (Deuterated, 13C, 15N) 1,612 Metabolites & Degradation Products 4,146 API Reference Standards 3,493

Reference Standard

N-(3-Chlorophenyl)-N-phenylnitrous amide chemical structure

N-(3-Chlorophenyl)-N-phenylnitrous amide

CAS: 68962-15-2
Formula: C₁₂H₉ClN₂O
MW: 232.66 g/mol

VQ-036676

Reference Standard

N-(3-Desethynylphenyl)-N-(3-bromophenyl) Erlotinib chemical structure

N-(3-Desethynylphenyl)-N-(3-bromophenyl) Erlotinib

CAS: 328528-74-1
Formula: C₂₀H₂₂BrN₃O₄
MW: 448.3 g/mol

VQ-025580

Reference Standard

N-(3-Dimethylaminopropyl)desipramine DiHCl chemical structure

N-(3-Dimethylaminopropyl)desipramine DiHCl

CAS: 1838-02-4
Formula: C₂₃H₃₅Cl₂N₃
MW: 424.4 g/mol

VQ-043853

Reference Standard

N-(3-Ethylphenyl)-6,7-bis(2-methoxyethoxy)quinazolin-4-amine hydrochloride chemical structure

N-(3-Ethylphenyl)-6,7-bis(2-methoxyethoxy)quinazolin-4-amine hydrochloride

CAS: 2055841-66-0
Formula: C₂₂H₂₈ClN₃O₄
MW: 433.9 g/mol

VQ-044115

Reference Standard

N-(3-Hydroxyphenyl)-N-(4-tolyl)-4,5-dihydro-1H-imidazole-2-carboxamide chemical structure

N-(3-Hydroxyphenyl)-N-(4-tolyl)-4,5-dihydro-1H-imidazole-2-carboxamide

CAS: 2767988-83-8
Formula: C₁₇H₁₇N₃O₂
MW: 295.34 g/mol

VQ-041448

Reference Standard

N-(3-Hydroxyphenyl)-N-(p-tolyl) nitrous amide chemical structure

N-(3-Hydroxyphenyl)-N-(p-tolyl) nitrous amide

CAS: 497930-24-2
Formula: C₁₃H₁₂N₂O₂
MW: 228.25 g/mol

VQ-027466

Reference Standard

N-(3-Hydroxyphenyl)acetamide chemical structure

N-(3-Hydroxyphenyl)acetamide

CAS: 621-42-1
Formula: C₈H₉NO₂
MW: 151.16 g/mol

VQ-040014

Reference Standard

N-(3-Methoxybenzyl)oleamide chemical structure

N-(3-Methoxybenzyl)oleamide

CAS: 883715-21-7
Formula: C₂₆H₄₃NO₂
MW: 401.6 g/mol

VQ-038236

Reference Standard

N-(3-Methoxyphenyl)cinnamamide chemical structure

N-(3-Methoxyphenyl)cinnamamide

CAS: 15116-41-3
Formula: C₁₆H₁₅NO₂
MW: 253.29 g/mol

VQ-029493

Reference Standard

N-(3-Nitrophenethyl)acetamide chemical structure

N-(3-Nitrophenethyl)acetamide

CAS: 135365-07-0
Formula: C₁₀H₁₂N₂O₃
MW: 208.21 g/mol

VQ-031943

Reference Standard

N-(3,4-Dichlorophenyl)-7-fluoro-6-nitroquinazolin-4-amine chemical structure

N-(3,4-Dichlorophenyl)-7-fluoro-6-nitroquinazolin-4-amine

CAS: 2512206-82-3
Formula: C₁₄H₇Cl₂FN₄O₂
MW: 353.1 g/mol

VQ-034772

Reference Standard

N-(3,4-Dichlorophenyl)-7-methoxy-6-(3-morpholinopropoxy)quinazolin-4-amine chemical structure

N-(3,4-Dichlorophenyl)-7-methoxy-6-(3-morpholinopropoxy)quinazolin-4-amine

CAS: 2089650-13-3
Formula: C₂₂H₂₄Cl₂N₄O₃
MW: 463.4 g/mol

VQ-048509

Reference Standard

N-(3,4-Diethoxybenzyl)-N-ethylnitrous amide

N-(3,4-Diethoxybenzyl)-N-ethylnitrous amide

Formula: C₁₃H₂₀N₂O₃
MW: 252.31 g/mol

In stock

Reference Standard

N-(3,4-Diethoxyphenethyl)-2-(3,4-diethoxyphenyl)acetamide chemical structure

N-(3,4-Diethoxyphenethyl)-2-(3,4-diethoxyphenyl)acetamide

CAS: 6298-46-0
Formula: C₂₄H₃₃NO₅
MW: 415.5 g/mol

VQ-025425

Reference Standard

N-(3,4-Difluorophenyl)-7-fluoro-6-nitroquinazolin-4-amine chemical structure

N-(3,4-Difluorophenyl)-7-fluoro-6-nitroquinazolin-4-amine

CAS: 2226537-61-5
Formula: C₁₄H₇F₃N₄O₂
MW: 320.23 g/mol

VQ-035634

Reference Standard

N-(3,4-Dimethoxyphenethyl)-2-(3,4-dimethoxyphenyl)-N-methylethan-1-amine chemical structure

N-(3,4-Dimethoxyphenethyl)-2-(3,4-dimethoxyphenyl)-N-methylethan-1-amine

CAS: 33978-72-2
Formula: C₂₁H₂₉NO₄
MW: 359.5 g/mol

VQ-042867

Reference Standard

N-(3,4-Dimethoxyphenethyl)-N-methylnitrous amide chemical structure

N-(3,4-Dimethoxyphenethyl)-N-methylnitrous amide

CAS: 3036886-78-6
Formula: C₁₁H₁₆N₂O₃
MW: 224.26 g/mol

VQ-028938

Reference Standard

N-(3,4-Dimethoxyphenethyl)formamide chemical structure

N-(3,4-Dimethoxyphenethyl)formamide

CAS: 14301-36-1
Formula: C₁₁H₁₅NO₃
MW: 209.24 g/mol

VQ-028304

Reference Standard

N-(3,4,5-Trimethoxyphenylacetyl)homoveratrylamine chemical structure

N-(3,4,5-Trimethoxyphenylacetyl)homoveratrylamine

CAS: 7668-87-3
Formula: C₂₁H₂₇NO₆
MW: 389.4 g/mol

VQ-049146

Reference Standard

N-(3,5-Dichloro-4-((5-isopropyl-6-oxo-1,6-dihydropyridazin-3-yl)oxy)phenyl)acetamide chemical structure

N-(3,5-Dichloro-4-((5-isopropyl-6-oxo-1,6-dihydropyridazin-3-yl)oxy)phenyl)acetamide

CAS: 1581304-51-9
Formula: C₁₅H₁₅Cl₂N₃O₃
MW: 356.2 g/mol

VQ-041882

Reference Standard

N-(3,5-Dichloro-4-((5-isopropyl-6-oxo-1,6-dihydropyridazin-3-yl)oxy)phenyl)benzamide chemical structure

N-(3,5-Dichloro-4-((5-isopropyl-6-oxo-1,6-dihydropyridazin-3-yl)oxy)phenyl)benzamide

CAS: 1581304-52-0
Formula: C₂₀H₁₇Cl₂N₃O₃
MW: 418.3 g/mol

VQ-041876

Reference Standard

N-(3,5-Dichloropyridin-4-yl)-4-(difluoromethoxy)-3-methoxybenzamide chemical structure

N-(3,5-Dichloropyridin-4-yl)-4-(difluoromethoxy)-3-methoxybenzamide

CAS: 162401-29-8
Formula: C₁₄H₁₀Cl₂F₂N₂O₃
MW: 363.1 g/mol

VQ-041985

Reference Standard

N-(3,5-Dimethoxyphenyl)acetamide chemical structure

N-(3,5-Dimethoxyphenyl)acetamide

CAS: 79257-61-7
Formula: C₁₀H₁₃NO₃
MW: 195.21 g/mol

VQ-048684

Reference Standard

N-(4-((3-Chloro-4-(pyridin-2-ylmethoxy)phenyl)amino)-3-cyano-7-ethoxyquinolin-6-yl)formamide chemical structure

N-(4-((3-Chloro-4-(pyridin-2-ylmethoxy)phenyl)amino)-3-cyano-7-ethoxyquinolin-6-yl)formamide

CAS: 1144516-20-0
Formula: C₂₅H₂₀ClN₅O₃
MW: 473.9 g/mol

VQ-028936

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