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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-10-nitroso-10H-phenothiazine chemical structure

2-Chloro-10-nitroso-10H-phenothiazine

CAS: 2892260-30-7
Formula: C₁₂H₇ClN₂OS
MW: 262.72 g/mol

VQ-029756

Reference Standard

2-Chloro-10H-phenothiazine 5-oxide chemical structure

2-Chloro-10H-phenothiazine 5-oxide

CAS: 1927-43-1
Formula: C₁₂H₈ClNOS
MW: 249.72 g/mol

VQ-022159

Reference Standard

2-Chloro-2-(phenylhydrazono)acetic Acid Ethyl Ester chemical structure

2-Chloro-2-(phenylhydrazono)acetic Acid Ethyl Ester

CAS: 28663-68-5
Formula: C₁₀H₁₁ClN₂O₂
MW: 226.66 g/mol

VQ-024327

Reference Standard

2-Chloro-2-bromoacetophenone chemical structure

2-Chloro-2-bromoacetophenone

CAS: 5000-66-8
Formula: C₈H₆BrClO
MW: 233.49 g/mol

VQ-032733

Reference Standard

2-Chloro-3-(3-(trifluoromethyl)phenyl)propanenitrile chemical structure

2-Chloro-3-(3-(trifluoromethyl)phenyl)propanenitrile

CAS: 27916-89-8
Formula: C₁₀H₇ClF₃N
MW: 233.62 g/mol

VQ-047790

Reference Standard

2-Chloro-3-iodobenzoic acid chemical structure

2-Chloro-3-iodobenzoic acid

CAS: 874817-93-3
Formula: C₇H₄ClIO₂
MW: 282.46 g/mol

VQ-048197

Reference Standard

2-Chloro-3,5-dinitrobenzoic acid chemical structure

2-Chloro-3,5-dinitrobenzoic acid

CAS: 2497-91-8
Formula: C₇H₃ClN₂O₆
MW: 246.56 g/mol

VQ-032521

Reference Standard

2-Chloro-4`-hydroxybenzophenone chemical structure

2-Chloro-4`-hydroxybenzophenone

CAS: 55270-71-8
Formula: C₁₃H₉ClO₂
MW: 232.66 g/mol

VQ-037226

Reference Standard

2-Chloro-4-(1H-Pyrazol-5-Yl)Benzonitrile chemical structure

2-Chloro-4-(1H-Pyrazol-5-Yl)Benzonitrile

CAS: 1297537-37-1
Formula: C₁₀H₆ClN₃
MW: 203.63 g/mol

VQ-022313

Reference Standard

2-Chloro-4-(3-iodo-1-isopropyl-1H-pyrazol-4-yl)pyrimidine chemical structure

2-Chloro-4-(3-iodo-1-isopropyl-1H-pyrazol-4-yl)pyrimidine

CAS: 1269440-58-5
Formula: C₁₀H₁₀ClIN₄
MW: 348.57 g/mol

VQ-045091

Reference Standard

2-Chloro-4-(4-fluoro-2-methylphenyl)-5-nitropyridine chemical structure

2-Chloro-4-(4-fluoro-2-methylphenyl)-5-nitropyridine

CAS: 2642577-29-3
Formula: C₁₂H₈ClFN₂O₂
MW: 266.65 g/mol

VQ-030438

Reference Standard

2-Chloro-4-(4-fluorophenyl)-5,6,7,8,9,10-hexahydrocycloocta[b]pyridine chemical structure

2-Chloro-4-(4-fluorophenyl)-5,6,7,8,9,10-hexahydrocycloocta[b]pyridine

CAS: 132813-14-0
Formula: C₁₇H₁₇ClFN
MW: 289.8 g/mol

VQ-035996

Reference Standard

2-Chloro-4-(piperidin-1-ylmethyl)pyridine chemical structure

2-Chloro-4-(piperidin-1-ylmethyl)pyridine

CAS: 146270-01-1
Formula: C₁₁H₁₅ClN₂
MW: 210.7 g/mol

VQ-037856

Reference Standard

2-Chloro-4-(piperidin-1-ylmethyl)pyridine oxalate chemical structure

2-Chloro-4-(piperidin-1-ylmethyl)pyridine oxalate

CAS: 406484-56-8
Formula: C₁₃H₁₇ClN₂O₄
MW: 300.74 g/mol

VQ-037861

Reference Standard

2-Chloro-4-(tert-pentyl)phenol chemical structure

2-Chloro-4-(tert-pentyl)phenol

CAS: 5323-65-9
Formula: C₁₁H₁₅ClO
MW: 198.69 g/mol

VQ-039836

Reference Standard

2-Chloro-4-fluoro-5-nitrotoluene chemical structure

2-Chloro-4-fluoro-5-nitrotoluene

CAS: 112108-73-3
Formula: C₇H₅ClFNO₂
MW: 189.57 g/mol

VQ-027064

Reference Standard

2-Chloro-4-methylsulfonylbenzoic acid chemical structure

2-Chloro-4-methylsulfonylbenzoic acid

CAS: 53250-83-2
Formula: C₈H₇ClO₄S
MW: 234.66 g/mol

VQ-045179

Reference Standard

2-Chloro-4-nitro-1,3-diphenoxybenzene chemical structure

2-Chloro-4-nitro-1,3-diphenoxybenzene

CAS: 78239-90-4
Formula: C₁₈H₁₂ClNO₄
MW: 341.7 g/mol

VQ-027311

Reference Standard

2-Chloro-4-nitrobenzene-1,3-diamine chemical structure

2-Chloro-4-nitrobenzene-1,3-diamine

CAS: 261764-92-5
Formula: C₆H₆ClN₃O₂
MW: 187.58 g/mol

VQ-027310

Reference Standard

2-Chloro-4,4-dimethylcyclohex-1-enecarbaldehyde chemical structure

2-Chloro-4,4-dimethylcyclohex-1-enecarbaldehyde

CAS: 1228943-80-3
Formula: C₉H₁₃ClO
MW: 172.65 g/mol

VQ-034566

Reference Standard

2-Chloro-5-(1-chloro-1,3-dihydro-3-oxo-1-isobenzofuranyl)-benzenesulfonyl Chloride chemical structure

2-Chloro-5-(1-chloro-1,3-dihydro-3-oxo-1-isobenzofuranyl)-benzenesulfonyl Chloride

CAS: 68592-11-0
Formula: C₁₄H₇Cl₃O₄S
MW: 377.6 g/mol

VQ-029763

Reference Standard

2-Chloro-5-(1-oxo-1H-isoindol-3-yl)benzenesulfonamide chemical structure

2-Chloro-5-(1-oxo-1H-isoindol-3-yl)benzenesulfonamide

CAS: 87177-16-0
Formula: C₁₄H₉ClN₂O₃S
MW: 320.8 g/mol

VQ-029762

Reference Standard

2-Chloro-5-(2-fluorophenyl)-1H-pyrrole-3-carbonitrile chemical structure

2-Chloro-5-(2-fluorophenyl)-1H-pyrrole-3-carbonitrile

CAS: 1240948-72-4
Formula: C₁₁H₆ClFN₂
MW: 220.63 g/mol

VQ-034677

Reference Standard

2-Chloro-5-(2-fluorophenyl)-1H-pyrrole-3-carboxaldehyde chemical structure

2-Chloro-5-(2-fluorophenyl)-1H-pyrrole-3-carboxaldehyde

CAS: 2169267-53-0
Formula: C₁₁H₇ClFNO
MW: 223.63 g/mol

VQ-028747

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