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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

2-[[[[(1,4-Dihydro-6-methyl-4-oxo-1,3,5-triazin-2-yl)methylamino]carbonyl]amino]sulfonyl]benzoic Aci chemical structure

2-[[[[(1,4-Dihydro-6-methyl-4-oxo-1,3,5-triazin-2-yl)methylamino]carbonyl]amino]sulfonyl]benzoic Aci

CAS: 879554-48-0
Formula: C₁₄H₁₅N₅O₆S
MW: 381.37 g/mol

VQ-043649

Reference Standard

2-[[3,4-Dihydro-3-methyl-2,4-dioxo-6-[(3R)-3-piperidinylamino]-1(2H)-pyrimidinyl]methyl]-benzonitrile chemical structure

2-[[3,4-Dihydro-3-methyl-2,4-dioxo-6-[(3R)-3-piperidinylamino]-1(2H)-pyrimidinyl]methyl]-benzonitrile

CAS: 2089611-85-6
Formula: C₁₈H₂₁N₅O₂
MW: 339.4 g/mol

VQ-020765

Reference Standard

2-[[4-(2-Pyridinyl)phenyl]methyl]hydrazinecarboxylic Acid 1,1-Dimethylethyl Ester chemical structure

2-[[4-(2-Pyridinyl)phenyl]methyl]hydrazinecarboxylic Acid 1,1-Dimethylethyl Ester

CAS: 198904-85-7
Formula: C₁₇H₂₁N₃O₂
MW: 299.37 g/mol

VQ-024383

Reference Standard

2-[[4-[2-Hydroxy-3-[(1-methylethyl)amino]propoxy]phenyl]methoxy]acetic acid chemical structure

2-[[4-[2-Hydroxy-3-[(1-methylethyl)amino]propoxy]phenyl]methoxy]acetic acid

CAS: 109791-19-7
Formula: C₁₅H₂₃NO₅
MW: 297.35 g/mol

VQ-047601

Reference Standard

2-[1-(Carbamoylmethyl)cyclopentyl]acetic Acid chemical structure

2-[1-(Carbamoylmethyl)cyclopentyl]acetic Acid

CAS: 60143-00-2
Formula: C₉H₁₅NO₃
MW: 185.22 g/mol

VQ-036057

Reference Standard

2-[2-(2-Chloro-3,4-dimethoxyphenyl)ethylamino]-1-(4-methoxyphenyl)ethanol chemical structure

2-[2-(2-Chloro-3,4-dimethoxyphenyl)ethylamino]-1-(4-methoxyphenyl)ethanol

CAS: 71636-38-9
Formula: C₁₉H₂₄ClNO₄
MW: 365.8 g/mol

VQ-042865

Reference Standard

2-[2-(2,2,2-Trifluoroethoxy)phenoxy]-ethanol chemical structure

2-[2-(2,2,2-Trifluoroethoxy)phenoxy]-ethanol

CAS: 160969-02-8
Formula: C₁₀H₁₁F₃O₃
MW: 236.19 g/mol

VQ-038934

Reference Standard

2-[2-(2,2,2-Trifluoroethoxy)phenoxy]ethyl methanesulfonate chemical structure

2-[2-(2,2,2-Trifluoroethoxy)phenoxy]ethyl methanesulfonate

CAS: 160969-03-9
Formula: C₁₁H₁₃F₃O₅S
MW: 314.28 g/mol

VQ-028030

Reference Standard

2-[2-(3-Methoxyphenyl)ethenyl]phenol chemical structure

2-[2-(3-Methoxyphenyl)ethenyl]phenol

CAS: 143212-74-2
Formula: C₁₅H₁₄O₂
MW: 226.27 g/mol

VQ-042103

Reference Standard

2-[2-(Dimethylamino)ethyl]pyridine chemical structure

2-[2-(Dimethylamino)ethyl]pyridine

CAS: 6304-27-4
Formula: C₉H₁₄N₂
MW: 150.22 g/mol

VQ-021291

Reference Standard

2-[2-(Dipropylamino)ethyl]-6-nitrophenyl Acetic Acid Hydrochloride chemical structure

2-[2-(Dipropylamino)ethyl]-6-nitrophenyl Acetic Acid Hydrochloride

CAS: 91374-25-3
Formula: C₁₆H₂₅ClN₂O₄
MW: 344.8 g/mol

VQ-033641

Reference Standard

2-[2-[[4-[(5S)-5-[[[(5-Chloro-2-thienyl)carbonyl]amino]methyl]-2-oxo-3-oxazolidinyl]phenyl]amino]ethoxy]-acetic Acid Hydrochloride chemical structure

2-[2-[[4-[(5S)-5-[[[(5-Chloro-2-thienyl)carbonyl]amino]methyl]-2-oxo-3-oxazolidinyl]phenyl]amino]ethoxy]-acetic Acid Hydrochloride

CAS: 931117-61-2
Formula: C₁₉H₂₁Cl₂N₃O₆S
MW: 490.4 g/mol

VQ-027846

Reference Standard

2-[2-[4-(2-Azidotetrahydro-3-methyl-5-oxo-2-furanyl)phenyl]hydrazinylidene]propanedinitrile chemical structure

2-[2-[4-(2-Azidotetrahydro-3-methyl-5-oxo-2-furanyl)phenyl]hydrazinylidene]propanedinitrile

CAS: 252638-01-0
Formula: C₁₄H₁₁N₇O₂
MW: 309.28 g/mol

VQ-031540

Reference Standard

2-[3-(Methylamino)-1-(2-thienyl)propyl]-1-naphthalenol hydrochloride chemical structure

2-[3-(Methylamino)-1-(2-thienyl)propyl]-1-naphthalenol hydrochloride

CAS: 1033719-36-6
Formula: C₁₈H₂₀ClNOS
MW: 333.9 g/mol

VQ-036847

Reference Standard

2-[3-[(Hydroxyimino)methyl]-4-(2-methylpropoxy)phenyl]-4-methyl-5-Thiazolecarboxylic Acid Ethyl Ester chemical structure

2-[3-[(Hydroxyimino)methyl]-4-(2-methylpropoxy)phenyl]-4-methyl-5-Thiazolecarboxylic Acid Ethyl Ester

CAS: 1271738-74-9
Formula: C₁₈H₂₂N₂O₄S
MW: 362.4 g/mol

VQ-025744

Reference Standard

2-[3-[Bis(2-chloroethyl)amino]propyl]-1,2,4-triazolo[4,3-a]pyridin-3(2H)-one chemical structure

2-[3-[Bis(2-chloroethyl)amino]propyl]-1,2,4-triazolo[4,3-a]pyridin-3(2H)-one

CAS: 53689-10-4
Formula: C₁₃H₁₈Cl₂N₄O
MW: 317.21 g/mol

VQ-034409

Reference Standard

2-[3-Cyano-4-(3-hydroxy-2-methylpropoxy)phenyl]-4-methyl-5-thiazolecarboxylic acid chemical structure

2-[3-Cyano-4-(3-hydroxy-2-methylpropoxy)phenyl]-4-methyl-5-thiazolecarboxylic acid

CAS: 887945-96-2
Formula: C₁₆H₁₆N₂O₄S
MW: 332.4 g/mol

VQ-037206

Reference Standard

2-[3-Oxo-2-azaspiro[4.5]decan-2-yl]acetic acid chemical structure

2-[3-Oxo-2-azaspiro[4.5]decan-2-yl]acetic acid

CAS: 923281-89-4
Formula: C₁₁H₁₇NO₃
MW: 211.26 g/mol

VQ-025949

Reference Standard

2-[3,5-Dichloro-4-[[6-chloro-5-(1-methylethyl)-3-pyridazinyl]oxy]phenyl]-2,3,4,5-tetrahydro-3,5-dioxo-1,2,4-triazine-6-carbonitrile chemical structure

2-[3,5-Dichloro-4-[[6-chloro-5-(1-methylethyl)-3-pyridazinyl]oxy]phenyl]-2,3,4,5-tetrahydro-3,5-dioxo-1,2,4-triazine-6-carbonitrile

CAS: 2403721-20-8
Formula: C₁₇H₁₁Cl₃N₆O₃
MW: 453.7 g/mol

VQ-021328

Reference Standard

2-[4-(2-Carboxypropoxy)-3-cyanophenyl]-4-methyl-5-thiazolecarboxylic Acid chemical structure

2-[4-(2-Carboxypropoxy)-3-cyanophenyl]-4-methyl-5-thiazolecarboxylic Acid

CAS: 407582-49-4
Formula: C₁₆H₁₄N₂O₅S
MW: 346.4 g/mol

VQ-037208

Reference Standard

2-[4-(2-Methylpropenyl)phenyl]propionic Acid chemical structure

2-[4-(2-Methylpropenyl)phenyl]propionic Acid

CAS: 75625-99-9
Formula: C₁₃H₁₆O₂
MW: 204.26 g/mol

VQ-026123

Reference Standard

2-[4-(2-Methylpropoxy)phenyl]acetic acid chemical structure

2-[4-(2-Methylpropoxy)phenyl]acetic acid

CAS: 13362-94-2
Formula: C₁₂H₁₆O₃
MW: 208.25 g/mol

VQ-027490

Reference Standard

2-[4-(4-Morpholinyl)-1,2,5-thiadiazol-3-yl] (S)-(-)-Timolol Ether chemical structure

2-[4-(4-Morpholinyl)-1,2,5-thiadiazol-3-yl] (S)-(-)-Timolol Ether

CAS: 1391068-18-0
Formula: C₁₉H₃₁N₇O₄S₂
MW: 485.6 g/mol

VQ-034274

Reference Standard

2-[4-(Bromomethyl)phenyl]propionic Acid chemical structure

2-[4-(Bromomethyl)phenyl]propionic Acid

CAS: 111128-12-2
Formula: C₁₀H₁₁BrO₂
MW: 243.1 g/mol

VQ-038171

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