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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-Chloro-5-methyl-4-nitropyridine chemical structure

2-Chloro-5-methyl-4-nitropyridine

CAS: 97944-45-1
Formula: C₆H₅ClN₂O₂
MW: 172.57 g/mol

VQ-048380

Reference Standard

2-Chloro-5-methylpyridin-4-amine chemical structure

2-Chloro-5-methylpyridin-4-amine

CAS: 79055-62-2
Formula: C₆H₇ClN₂
MW: 142.58 g/mol

VQ-030744

Reference Standard

2-Chloro-5-methylpyridine chemical structure

2-Chloro-5-methylpyridine

CAS: 18368-64-4
Formula: C₆H₆ClN
MW: 127.57 g/mol

VQ-030741

Reference Standard

2-Chloro-5-nitrophenylboronic acid chemical structure

2-Chloro-5-nitrophenylboronic acid

CAS: 867333-29-7
Formula: C₆H₅BClNO₄
MW: 201.37 g/mol

VQ-044696

Reference Standard

2-Chloro-5-nitrotoluene chemical structure

2-Chloro-5-nitrotoluene

CAS: 13290-74-9
Formula: C₇H₆ClNO₂
MW: 171.58 g/mol

VQ-042598

Reference Standard

2-Chloro-5,6-diphenylpyrazine chemical structure

2-Chloro-5,6-diphenylpyrazine

CAS: 41270-66-0
Formula: C₁₆H₁₁ClN₂
MW: 266.72 g/mol

VQ-023349

Reference Standard

2-Chloro-6-(3-(3,3,3-trifluoro-2,2-dimethylpropoxy)-1H-pyrazol-1-yl)nicotinic Acid chemical structure

2-Chloro-6-(3-(3,3,3-trifluoro-2,2-dimethylpropoxy)-1H-pyrazol-1-yl)nicotinic Acid

CAS: 2229861-17-8
Formula: C₁₄H₁₃ClF₃N₃O₃
MW: 363.72 g/mol

VQ-022499

Reference Standard

2-Chloro-6-(methylsulfonyl)benzoic acid chemical structure

2-Chloro-6-(methylsulfonyl)benzoic acid

CAS: 1104561-82-1
Formula: C₈H₇ClO₄S
MW: 234.66 g/mol

VQ-034652

Reference Standard

2-Chloro-6-amino-9-(2',3',5'-tri-O-acetyl-β-D-ribofuranosyl)purine chemical structure

2-Chloro-6-amino-9-(2',3',5'-tri-O-acetyl-β-D-ribofuranosyl)purine

CAS: 79999-39-6
Formula: C₁₆H₁₈ClN₅O₇
MW: 427.8 g/mol

VQ-043585

Reference Standard

2-Chloro-6-Fluorobenzoic Acid chemical structure

2-Chloro-6-Fluorobenzoic Acid

CAS: 434-75-3
Formula: C₇H₄ClFO₂
MW: 174.55 g/mol

VQ-039909

Reference Standard

2-Chloro-6-methoxypurine chemical structure

2-Chloro-6-methoxypurine

CAS: 1198-46-5
Formula: C₆H₅ClN₄O
MW: 184.58 g/mol

VQ-027170

Reference Standard

2-Chloro-7-Cyclopentyl-7H-Pyrrolo[2,3-d]Pyrimidine-6-Carbaldehyde chemical structure

2-Chloro-7-Cyclopentyl-7H-Pyrrolo[2,3-d]Pyrimidine-6-Carbaldehyde

CAS: 1211443-55-8
Formula: C₁₂H₁₂ClN₃O
MW: 249.69 g/mol

VQ-032738

Reference Standard

2-Chloro-7-cyclopentyl-7H-pyrrolo[2,3-d]pyrimidine-6-carboxylic Acid chemical structure

2-Chloro-7-cyclopentyl-7H-pyrrolo[2,3-d]pyrimidine-6-carboxylic Acid

CAS: 1211443-58-1
Formula: C₁₂H₁₂ClN₃O₂
MW: 265.69 g/mol

VQ-027793

Reference Standard

2-Chloro-7-cyclopentyl-N-methyl-7H-pyrrolo[2,3-d]pyrimidine-6-carboxamide chemical structure

2-Chloro-7-cyclopentyl-N-methyl-7H-pyrrolo[2,3-d]pyrimidine-6-carboxamide

CAS: 1211444-14-2
Formula: C₁₃H₁₅ClN₄O
MW: 278.74 g/mol

VQ-033525

Reference Standard

2-Chloro-9-(2-chloro-2-deoxy-β-D-arabinofuranosyl)purin-6-amine chemical structure

2-Chloro-9-(2-chloro-2-deoxy-β-D-arabinofuranosyl)purin-6-amine

CAS: 111615-20-4
Formula: C₁₀H₁₁Cl₂N₅O₃
MW: 320.13 g/mol

VQ-029862

Reference Standard

2-Chloro-N-((1,3-dimethyl-1H-pyrazol-4-yl)sulfonyl)-6-(3-(3,3,3-trifluoro-2,2-dimethylpropoxy)-1H-pyrazol-1-yl)nicotinamide chemical structure

2-Chloro-N-((1,3-dimethyl-1H-pyrazol-4-yl)sulfonyl)-6-(3-(3,3,3-trifluoro-2,2-dimethylpropoxy)-1H-pyrazol-1-yl)nicotinamide

CAS: 2229861-18-9
Formula: C₁₉H₂₀ClF₃N₆O₄S
MW: 520.9 g/mol

VQ-025507

Reference Standard

2-Chloro-N-(1,1-dimethyl-2-phenyl-ethyl)-N-methyl-acetamide chemical structure

2-Chloro-N-(1,1-dimethyl-2-phenyl-ethyl)-N-methyl-acetamide

CAS: 2293-55-2
Formula: C₁₃H₁₈ClNO
MW: 239.74 g/mol

VQ-044394

Reference Standard

2-Chloro-N-(2-(2-chlorobenzoyl)-4-nitrophenyl)benzamide chemical structure

2-Chloro-N-(2-(2-chlorobenzoyl)-4-nitrophenyl)benzamide

CAS: 24863-73-8
Formula: C₂₀H₁₂Cl₂N₂O₄
MW: 415.2 g/mol

VQ-044833

Reference Standard

2-Chloro-N-(2-(2,5-dimethoxyphenyl)-2-hydroxyethyl)acetamide chemical structure

2-Chloro-N-(2-(2,5-dimethoxyphenyl)-2-hydroxyethyl)acetamide

CAS: 60681-99-4
Formula: C₁₂H₁₆ClNO₄
MW: 273.71 g/mol

VQ-049109

Reference Standard

2-Chloro-N-(2-chloro-4-methyl-3-pyridinyl)-3-pyridinecarboxamide chemical structure

2-Chloro-N-(2-chloro-4-methyl-3-pyridinyl)-3-pyridinecarboxamide

CAS: 133627-46-0
Formula: C₁₂H₉Cl₂N₃O
MW: 282.12 g/mol

VQ-032110

Reference Standard

2-Chloro-N-(2-chloroethyl)-N-methyl-2-phenylethan-1-amine chemical structure

2-Chloro-N-(2-chloroethyl)-N-methyl-2-phenylethan-1-amine

CAS: 22270-22-0
Formula: C₁₁H₁₅Cl₂N
MW: 232.15 g/mol

VQ-031953

Reference Standard

2-Chloro-N-(2-hydroxyethyl)-N-phenylacetamide chemical structure

2-Chloro-N-(2-hydroxyethyl)-N-phenylacetamide

CAS: 28025-61-8
Formula: C₁₀H₁₂ClNO₂
MW: 213.66 g/mol

VQ-041952

Reference Standard

2-Chloro-N-(2-oxo-2-phenylethyl)acetamide chemical structure

2-Chloro-N-(2-oxo-2-phenylethyl)acetamide

CAS: 65385-18-4
Formula: C₁₀H₁₀ClNO₂
MW: 211.64 g/mol

VQ-047747

Reference Standard

2-Chloro-N-(2,3-dimethylphenyl)benzamide chemical structure

2-Chloro-N-(2,3-dimethylphenyl)benzamide

CAS: 196617-88-6
Formula: C₁₅H₁₄ClNO
MW: 259.73 g/mol

VQ-039448

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