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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-((R)-1-Hydroxybutan-2-yl)-N-(2-(((R)-1-hydroxybutan-2-yl)amino)ethyl)nitrous amide chemical structure

N-((R)-1-Hydroxybutan-2-yl)-N-(2-(((R)-1-hydroxybutan-2-yl)amino)ethyl)nitrous amide

CAS: 78213-39-5
Formula: C₁₀H₂₃N₃O₃
MW: 233.31 g/mol

VQ-030589

Reference Standard

N-(1-(((R)-1-Hydroxy-3-methylbutyl)amino)-1-oxo-3-phenylpropan-2-yl)pyrazine-2-carboxamide chemical structure

N-(1-(((R)-1-Hydroxy-3-methylbutyl)amino)-1-oxo-3-phenylpropan-2-yl)pyrazine-2-carboxamide

CAS: 2747958-64-9
Formula: C₁₉H₂₄N₄O₃
MW: 356.4 g/mol

VQ-029471

Reference Standard

N-(1-(1-(4-Fluorobenzyl)-1H-benzo[d]imidazol-2-yl)piperidin-4-yl)-4-methoxy-N-methylpyrimidin-2-amine chemical structure

N-(1-(1-(4-Fluorobenzyl)-1H-benzo[d]imidazol-2-yl)piperidin-4-yl)-4-methoxy-N-methylpyrimidin-2-amine

CAS: 935860-12-1
Formula: C₂₅H₂₇FN₆O
MW: 446.5 g/mol

VQ-038464

Reference Standard

N-(1-(3,6-Dibromopyridin-2-yl)-2-(3,5-difluorophenyl)ethyl)-1,1-diphenylmethanimine chemical structure

N-(1-(3,6-Dibromopyridin-2-yl)-2-(3,5-difluorophenyl)ethyl)-1,1-diphenylmethanimine

CAS: 2375019-72-8
Formula: C₂₆H₁₈Br₂F₂N₂
MW: 556.2 g/mol

VQ-037933

Reference Standard

N-(1-(7,8-Dihydronaphthalen-1-yl)ethyl)-3-(3-(trifluoromethyl)phenyl)propan-1-amine Hydrochloride chemical structure

N-(1-(7,8-Dihydronaphthalen-1-yl)ethyl)-3-(3-(trifluoromethyl)phenyl)propan-1-amine Hydrochloride

CAS: 1020414-33-8
Formula: C₂₂H₂₅ClF₃N
MW: 395.9 g/mol

VQ-029798

Reference Standard

N-(1-(7,8-Dihydronaphthalen-1-yl)ethyl)-3-(3-(trifluoromethyl)phenyl)propan-1-amine hydrochloride chemical structure

N-(1-(7,8-Dihydronaphthalen-1-yl)ethyl)-3-(3-(trifluoromethyl)phenyl)propan-1-amine hydrochloride

CAS: 1622173-72-1
Formula: C₂₂H₂₅ClF₃N
MW: 395.9 g/mol

VQ-029800

Reference Standard

N-(1-(Benzo[b]thiophen-2-yl)ethyl)hydroxylamine chemical structure

N-(1-(Benzo[b]thiophen-2-yl)ethyl)hydroxylamine

CAS: 118564-89-9
Formula: C₁₀H₁₁NOS
MW: 193.27 g/mol

VQ-028777

Reference Standard

N-(1-Amino-1-oxobutan-2-yl)-4-chlorobutanamide chemical structure

N-(1-Amino-1-oxobutan-2-yl)-4-chlorobutanamide

CAS: 774604-48-7
Formula: C₈H₁₅ClN₂O₂
MW: 206.67 g/mol

VQ-037975

Reference Standard

N-(1-Benzo[b]thien-2-yl-ethyl)-N-hydroxy O-phenyl Carbamate chemical structure

N-(1-Benzo[b]thien-2-yl-ethyl)-N-hydroxy O-phenyl Carbamate

CAS: 1026256-93-8
Formula: C₁₇H₁₅NO₃S
MW: 313.4 g/mol

VQ-028778

Reference Standard

N-(1-Ethylpropyl)-3,4-Xylidine chemical structure

N-(1-Ethylpropyl)-3,4-Xylidine

CAS: 56038-89-2
Formula: C₁₃H₂₁N
MW: 191.31 g/mol

VQ-044294

Reference Standard

N-(1-Naphthalen-1-yl-ethyl)-4-nitro-benzenesulfonamide chemical structure

N-(1-Naphthalen-1-yl-ethyl)-4-nitro-benzenesulfonamide

CAS: 1298419-35-8
Formula: C₁₈H₁₆N₂O₄S
MW: 356.4 g/mol

VQ-029806

Reference Standard

N-(1-Nitrosopiperidin-3-yl)acetamide chemical structure

N-(1-Nitrosopiperidin-3-yl)acetamide

Formula: C₇H₁₃N₃O₂
MW: 171.2 g/mol

In stock

Reference Standard

N-(1-Oxo-6-phenylhexyl)glycyl-L-tryptophanamide chemical structure

N-(1-Oxo-6-phenylhexyl)glycyl-L-tryptophanamide

CAS: 678996-63-9
Formula: C₂₅H₃₀N₄O₃
MW: 434.5 g/mol

VQ-042728

Reference Standard

N-(1-Oxopropyl)-N-[[2′-(2H-tetrazol-5-yl)[1,1′-biphenyl]-4-yl]methyl]-L-valine

N-(1-Oxopropyl)-N-[[2′-(2H-tetrazol-5-yl)[1,1′-biphenyl]-4-yl]methyl]-L-valine

CAS: 1332623-79-6
Formula: C₂₂H₂₅N₅O₃
MW: 407.47 g/mol

VQ-042806

Reference Standard

N-(1,3-Dihydroxy-2-(hydroxymethyl)propan-2-yl)-5-(1,2-dithiolan-3-yl)pentanamide chemical structure

N-(1,3-Dihydroxy-2-(hydroxymethyl)propan-2-yl)-5-(1,2-dithiolan-3-yl)pentanamide

CAS: 916746-61-7
Formula: C₁₂H₂₃NO₄S₂
MW: 309.5 g/mol

VQ-035451

Reference Standard

N-(1,3-Dihydroxy-2-(hydroxymethyl)propan-2-yl)-N-hydroxynitrous amide

N-(1,3-Dihydroxy-2-(hydroxymethyl)propan-2-yl)-N-hydroxynitrous amide

CAS: 874531-36-9
Formula: C₄H₁₀N₂O₅
MW: 166.13 g/mol

VQ-040471

Reference Standard

N-(1,5-Dimethyl-3-oxo-2-phenyl-2,3-dihydro-1H-pyrazol-4-yl)-N-methylnitrous amide chemical structure

N-(1,5-Dimethyl-3-oxo-2-phenyl-2,3-dihydro-1H-pyrazol-4-yl)-N-methylnitrous amide

CAS: 73829-38-6
Formula: C₁₂H₁₄N₄O₂
MW: 246.27 g/mol

VQ-023083

Reference Standard

N-(1H-Imidazol-2-yl)quinoxalin-6-amine chemical structure

N-(1H-Imidazol-2-yl)quinoxalin-6-amine

CAS: 185312-10-1
Formula: C₁₁H₉N₅
MW: 211.22 g/mol

VQ-024645

Reference Standard

N-(2-(((5-((Dimethylamino)methyl)furan-2-yl)methyl)thio)ethyl)-N-(1-(methyl(nitroso)amino)-2-nitrovinyl)nitrous amide

N-(2-(((5-((Dimethylamino)methyl)furan-2-yl)methyl)thio)ethyl)-N-(1-(methyl(nitroso)amino)-2-nitrovinyl)nitrous amide

CAS: 185847-75-0
Formula: C₁₃H₂₀N₆O₅S
MW: 372.4 g/mol

VQ-033456

Reference Standard

N-(2-((2-(Dimethylamino)ethyl)(methyl)amino)-4-methoxy-5-((4-(1-methyl-1H-indol-3-yl)pyrimidin-2-yl)amino)phenyl)-N-(3-((2-((2-(dimethylamino)ethyl)(methyl)amino)-4-methoxy-5-((4-(1-methyl-1H-indol-3-yl)pyrimidin-2-yl)amino)phenyl)amino)-3-oxopropyl)acrylamide chemical structure

N-(2-((2-(Dimethylamino)ethyl)(methyl)amino)-4-methoxy-5-((4-(1-methyl-1H-indol-3-yl)pyrimidin-2-yl)amino)phenyl)-N-(3-((2-((2-(dimethylamino)ethyl)(methyl)amino)-4-methoxy-5-((4-(1-methyl-1H-indol-3-yl)pyrimidin-2-yl)amino)phenyl)amino)-3-oxopropyl)acrylamide

CAS: 2919324-18-6
Formula: C₅₆H₆₆N₁₄O₄
MW: 999.2 g/mol

VQ-038812

Reference Standard

N-(2-((2-Acrylamido-5-methoxy-4-((4-(1-methyl-1H-indol-3-yl)pyrimidin-2-yl)amino)phenyl)(methyl)amino)ethyl)-3-((2-((2-(dimethylamino)ethyl)(methyl)amino)-4-methoxy-5-((4-(1-methyl-1H-indol-3-yl)pyrimidin-2-yl)amino)phenyl)amino)-N,N-dimethyl-3-oxopropan-1-aminium chemical structure

N-(2-((2-Acrylamido-5-methoxy-4-((4-(1-methyl-1H-indol-3-yl)pyrimidin-2-yl)amino)phenyl)(methyl)amino)ethyl)-3-((2-((2-(dimethylamino)ethyl)(methyl)amino)-4-methoxy-5-((4-(1-methyl-1H-indol-3-yl)pyrimidin-2-yl)amino)phenyl)amino)-N,N-dimethyl-3-oxopropan-1-aminium

CAS: 2564638-97-5
Formula: C₅₆H₆₇N₁₄O₄⁺
MW: 1000.2 g/mol

VQ-027060

Reference Standard

N-(2-((2-Aminoethyl)amino)ethyl)-N-(2-benzamidoethyl)benzamide

N-(2-((2-Aminoethyl)amino)ethyl)-N-(2-benzamidoethyl)benzamide

CAS: 2514958-70-2
Formula: C₂₀H₂₆N₄O₂
MW: 354.45 g/mol

VQ-042678

Reference Standard

N-(2-(1-Hydroxycyclohexyl)-2-(4-hydroxyphenyl)ethyl)-N-methylnitrous Amide chemical structure

N-(2-(1-Hydroxycyclohexyl)-2-(4-hydroxyphenyl)ethyl)-N-methylnitrous Amide

CAS: 3017268-48-0
Formula: C₁₅H₂₂N₂O₃
MW: 278.35 g/mol

VQ-035275

Reference Standard

N-(2-(1,6-Dihydro-2H-indeno[5,4-b]furan-8-yl)ethyl)propionamide chemical structure

N-(2-(1,6-Dihydro-2H-indeno[5,4-b]furan-8-yl)ethyl)propionamide

CAS: 196597-30-5
Formula: C₁₆H₁₉NO₂
MW: 257.33 g/mol

VQ-033441

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