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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

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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-(4-(4-Chlorobutanoyl)phenyl)-2-methylpropanoic Acid chemical structure

2-(4-(4-Chlorobutanoyl)phenyl)-2-methylpropanoic Acid

CAS: 169280-21-1
Formula: C₁₄H₁₇ClO₃
MW: 268.73 g/mol

VQ-037252

Reference Standard

2-(4-(4-Hydroxybenzoyl)phenoxy)-2-methylpropanoic acid chemical structure

2-(4-(4-Hydroxybenzoyl)phenoxy)-2-methylpropanoic acid

CAS: 61002-27-5
Formula: C₁₇H₁₆O₅
MW: 300.3 g/mol

VQ-030698

Reference Standard

2-(4-(6-((5-((2-Chloro-6-methylphenyl)carbamoyl)thiazol-2-yl)amino)-2-methylpyrimidin-4-yl)piperazin-1-yl)ethyl acetate chemical structure

2-(4-(6-((5-((2-Chloro-6-methylphenyl)carbamoyl)thiazol-2-yl)amino)-2-methylpyrimidin-4-yl)piperazin-1-yl)ethyl acetate

CAS: 1245157-85-0
Formula: C₂₄H₂₈ClN₇O₃S
MW: 530 g/mol

VQ-025210

Reference Standard

2-(4-(Benzo[d][1,3]dioxol-4-ylmethyl)piperazin-1-yl)pyrimidine chemical structure

2-(4-(Benzo[d][1,3]dioxol-4-ylmethyl)piperazin-1-yl)pyrimidine

CAS: 1022849-90-6
Formula: C₁₆H₁₈N₄O₂
MW: 298.34 g/mol

VQ-033215

Reference Standard

2-(4-(Chloromethyl)-4-hydroxy-2-thiazolin-2-yl)guanidine hydrochloride chemical structure

2-(4-(Chloromethyl)-4-hydroxy-2-thiazolin-2-yl)guanidine hydrochloride

CAS: 95907-33-8
Formula: C₅H₁₀Cl₂N₄OS
MW: 245.13 g/mol

VQ-030675

Reference Standard

2-(4-(Chloromethyl)phenyl)propanoic Acid chemical structure

2-(4-(Chloromethyl)phenyl)propanoic Acid

CAS: 80530-55-8
Formula: C₁₀H₁₁ClO₂
MW: 198.64 g/mol

VQ-031668

Reference Standard

2-(4-(Diethylamino)benzoyl)benzene-1,4-disulfonic Acid chemical structure

2-(4-(Diethylamino)benzoyl)benzene-1,4-disulfonic Acid

CAS: 2828260-22-4
Formula: C₁₇H₁₉NO₇S₂
MW: 413.5 g/mol

VQ-031281

Reference Standard

2-(4-(Dimethylamino)-1-(o-tolyl)butyl)phenol chemical structure

2-(4-(Dimethylamino)-1-(o-tolyl)butyl)phenol

CAS: 94432-54-9
Formula: C₁₉H₂₅NO
MW: 283.4 g/mol

VQ-036816

Reference Standard

2-(4-(Tert-Butoxy)phenyl)ethanol chemical structure

2-(4-(Tert-Butoxy)phenyl)ethanol

CAS: 123195-72-2
Formula: C₁₂H₁₈O₂
MW: 194.27 g/mol

VQ-026668

Reference Standard

2-(4-(tert-Butyl)-3-hydroxy-2,6-dimethylbenzyl)-4,5-dihydro-1H-imidazol-1-ol chemical structure

2-(4-(tert-Butyl)-3-hydroxy-2,6-dimethylbenzyl)-4,5-dihydro-1H-imidazol-1-ol

CAS: 756534-86-8
Formula: C₁₆H₂₄N₂O₂
MW: 276.37 g/mol

VQ-041283

Reference Standard

2-(4-(Thien-2-yl)phenyl)thiophene chemical structure

2-(4-(Thien-2-yl)phenyl)thiophene

CAS: 23354-94-1
Formula: C₁₄H₁₀S₂
MW: 242.4 g/mol

VQ-024736

Reference Standard

2-(4-Acetylbenzyl)cyclopentanone chemical structure

2-(4-Acetylbenzyl)cyclopentanone

CAS: 96824-28-1
Formula: C₁₄H₁₆O₂
MW: 216.27 g/mol

VQ-038174

Reference Standard

2-(4-Acetylphenyl)-2-methylpropanoic Acid chemical structure

2-(4-Acetylphenyl)-2-methylpropanoic Acid

CAS: 857768-18-4
Formula: C₁₂H₁₄O₃
MW: 206.24 g/mol

VQ-048369

Reference Standard

2-(4-Amino-1,3-dioxoisoindolin-2-yl)pentanedioic Acid chemical structure

2-(4-Amino-1,3-dioxoisoindolin-2-yl)pentanedioic Acid

CAS: 18658-36-1
Formula: C₁₃H₁₂N₂O₆
MW: 292.24 g/mol

VQ-041549

Reference Standard

2-(4-Amino-4,5-dihydro-1H-1,2,4-triazol-1-yl)-1-(2,4-difluorophenyl)ethan-1-one chemical structure

2-(4-Amino-4,5-dihydro-1H-1,2,4-triazol-1-yl)-1-(2,4-difluorophenyl)ethan-1-one

CAS: 2084088-31-1
Formula: C₁₀H₁₀F₂N₄O
MW: 240.21 g/mol

VQ-030773

Reference Standard

2-(4-Aminocyclohexyl)acetic Acid chemical structure

2-(4-Aminocyclohexyl)acetic Acid

CAS: 1197-54-2
Formula: C₈H₁₅NO₂
MW: 157.21 g/mol

VQ-024805

Reference Standard

2-(4-Boc-Piperazino)-5-Bromopyridine chemical structure

2-(4-Boc-Piperazino)-5-Bromopyridine

CAS: 153747-97-8
Formula: C₁₄H₂₀BrN₃O₂
MW: 342.23 g/mol

VQ-033211

Reference Standard

2-(4-Bromophenyl)-2,2-dimethylacetic Acid chemical structure

2-(4-Bromophenyl)-2,2-dimethylacetic Acid

CAS: 32454-35-6
Formula: C₁₀H₁₁BrO₂
MW: 243.1 g/mol

VQ-035974

Reference Standard

2-(4-Chloro-3-fluorophenyl)cyclopropan-1-amine chemical structure

2-(4-Chloro-3-fluorophenyl)cyclopropan-1-amine

CAS: 1304995-11-6
Formula: C₉H₉ClFN
MW: 185.62 g/mol

VQ-034247

Reference Standard

2-(4-Chloro-3-nitrophenyl)pyridine

2-(4-Chloro-3-nitrophenyl)pyridine

CAS: 916050-62-9
Formula: C₁₁H₇ClN₂O₂
MW: 234.64 g/mol

VQ-028722

Reference Standard

2-(4-Chloro-3-sulfamoylbenzoyl)benzamide chemical structure

2-(4-Chloro-3-sulfamoylbenzoyl)benzamide

CAS: 345930-31-6
Formula: C₁₄H₁₁ClN₂O₄S
MW: 338.8 g/mol

VQ-029768

Reference Standard

2-(4-Chlorophenoxy)aniline chemical structure

2-(4-Chlorophenoxy)aniline

CAS: 2770-11-8
Formula: C₁₂H₁₀ClNO
MW: 219.66 g/mol

VQ-043041

Reference Standard

2-(4-Chlorophenyl)-2-(pyridin-2-yl)acetonitrile chemical structure

2-(4-Chlorophenyl)-2-(pyridin-2-yl)acetonitrile

CAS: 5005-37-8
Formula: C₁₃H₉ClN₂
MW: 228.67 g/mol

VQ-036262

Reference Standard

2-(4-Chlorophenyl)-2-(pyridin-2-yl)acetonitrile Hydrochloride

2-(4-Chlorophenyl)-2-(pyridin-2-yl)acetonitrile Hydrochloride

CAS: 2639753-08-3
Formula: C₁₃H₉ClN₂ : HCl
MW: 265.14 g/mol

VQ-044237

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