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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

1,3-Dimethyl-1H-pyrazole-4-sulfonamide chemical structure

1,3-Dimethyl-1H-pyrazole-4-sulfonamide

CAS: 88398-53-2
Formula: C₅H₉N₃O₂S
MW: 175.21 g/mol

VQ-035356

Reference Standard

1,3-Dimethyl-6-nitro-1H-indazole chemical structure

1,3-Dimethyl-6-nitro-1H-indazole

CAS: 1354224-47-7
Formula: C₉H₉N₃O₂
MW: 191.19 g/mol

VQ-027145

Reference Standard

1,3-Dimethyl-8-((6-methyl-1,3-dihydrofuro[3,4-c]pyridin-7-yl)oxy)-3,9-dihydro-1H-purine-2,6-dione chemical structure

1,3-Dimethyl-8-((6-methyl-1,3-dihydrofuro[3,4-c]pyridin-7-yl)oxy)-3,9-dihydro-1H-purine-2,6-dione

CAS: 1797911-12-6
Formula: C₁₅H₁₅N₅O₄
MW: 329.31 g/mol

VQ-036716

Reference Standard

1,3-Dimethyladamantane chemical structure

1,3-Dimethyladamantane

CAS: 702-79-4
Formula: C₁₂H₂₀
MW: 164.29 g/mol

VQ-023064

Reference Standard

1,3-Dimethyladamantane D6 chemical structure

1,3-Dimethyladamantane D6

CAS: 1189501-17-4
Formula: C₁₂H₂₀
MW: 170.32 g/mol

VQ-043452

Reference Standard

1,3-Dimorpholinopropane chemical structure

1,3-Dimorpholinopropane

CAS: 48152-09-6
Formula: C₁₁H₂₂N₂O₂
MW: 214.3 g/mol

VQ-032961

Reference Standard

1,3-Dinitropyrene chemical structure

1,3-Dinitropyrene

CAS: 75321-20-9
Formula: C₁₆H₈N₂O₄
MW: 292.24 g/mol

VQ-045177

Reference Standard

1,3-Dioxo-2-(2,6-dioxopiperidin-3-yl)-5-aminoisoindoline chemical structure

1,3-Dioxo-2-(2,6-dioxopiperidin-3-yl)-5-aminoisoindoline

CAS: 191732-76-0
Formula: C₁₃H₁₁N₃O₄
MW: 273.24 g/mol

VQ-032417

Reference Standard

1,3-Dioxolane-4-methanol, 2-(2,4-dichlorophenyl)-2-(1H-1,2,4-triazol-1-ylmethyl)-, 4-methanesulfonate, (2R,4S)-rel chemical structure

1,3-Dioxolane-4-methanol, 2-(2,4-dichlorophenyl)-2-(1H-1,2,4-triazol-1-ylmethyl)-, 4-methanesulfonate, (2R,4S)-rel

CAS: 854372-78-4
Formula: C₁₄H₁₅Cl₂N₃O₅S
MW: 408.3 g/mol

VQ-031307

Reference Standard

1,3-Diphenyl-2-Aminopropane chemical structure

1,3-Diphenyl-2-Aminopropane

CAS: 4275-43-8
Formula: C₁₅H₁₇N
MW: 211.3 g/mol

VQ-037845

Reference Standard

1,3-Thiazol-5-ylmethyl N-[(2S,3S,5S)-5-amino-3-hydroxy-1,6-diphenylhexan-2-yl]carbamate chemical structure

1,3-Thiazol-5-ylmethyl N-[(2S,3S,5S)-5-amino-3-hydroxy-1,6-diphenylhexan-2-yl]carbamate

CAS: 144164-11-4
Formula: C₂₃H₂₇N₃O₃S
MW: 425.5 g/mol

VQ-041941

Reference Standard

1,3,4,6,7,11b-Hexahydro-9-hydroxy-10-methoxy-3-(2-methylpropyl)-2H-benzo[a]quinolizin-2-one chemical structure

1,3,4,6,7,11b-Hexahydro-9-hydroxy-10-methoxy-3-(2-methylpropyl)-2H-benzo[a]quinolizin-2-one

CAS: 149183-89-1
Formula: C₁₈H₂₅NO₃
MW: 303.4 g/mol

VQ-034161

Reference Standard

1,3,5-Tri-O-benzoyl-2-O-(1H-imidazol-1-ylsulfonyl)-alpha-D-ribofuranose chemical structure

1,3,5-Tri-O-benzoyl-2-O-(1H-imidazol-1-ylsulfonyl)-alpha-D-ribofuranose

CAS: 97614-42-1
Formula: C₂₉H₂₄N₂O₁₀S
MW: 592.6 g/mol

VQ-043631

Reference Standard

1,3,5-Tribromoadamantane chemical structure

1,3,5-Tribromoadamantane

CAS: 707-34-6
Formula: C₁₀H₁₃Br₃
MW: 372.92 g/mol

VQ-023063

Reference Standard

1,3,5-Trimethyl-2,4,6-tris(3,5-di-tert-butyl-4-hydroxybenzyl)benzene chemical structure

1,3,5-Trimethyl-2,4,6-tris(3,5-di-tert-butyl-4-hydroxybenzyl)benzene

CAS: 1709-70-2
Formula: C₅₄H₇₈O₃
MW: 775.2 g/mol

VQ-032555

Reference Standard

1,3,5,7-Tetrabromoadamantane chemical structure

1,3,5,7-Tetrabromoadamantane

CAS: 7314-86-5
Formula: C₁₀H₁₂Br₄
MW: 451.82 g/mol

VQ-031783

Reference Standard

1,3,7-Trichlorodibenzo-p-Dioxin chemical structure

1,3,7-Trichlorodibenzo-p-Dioxin

CAS: 67028-17-5
Formula: C₁₂H₅Cl₃O₂
MW: 287.5 g/mol

VQ-023417

Reference Standard

1,3,7-Trimethyluric Acid chemical structure

1,3,7-Trimethyluric Acid

CAS: 5415-44-1
Formula: C₈H₁₀N₄O₃
MW: 210.19 g/mol

VQ-032519

Reference Standard

1,3''-Di-HABA Kanamycin A chemical structure

1,3''-Di-HABA Kanamycin A

CAS: 197909-66-3
Formula: C₂₆H₅₀N₆O₁₅
MW: 686.7 g/mol

VQ-024238

Reference Standard

1,4-Anhydro-1,5-dihydroxy-1-methoxyempagliflozin chemical structure

1,4-Anhydro-1,5-dihydroxy-1-methoxyempagliflozin

CAS: 1620758-25-9
Formula: C₂₄H₂₉ClO₈
MW: 480.9 g/mol

VQ-030460

Reference Standard

1,4-Bis((4,8,11-tritosyl-1,4,8,11-tetraazacyclotetradecan-1-yl)methyl)benzene chemical structure

1,4-Bis((4,8,11-tritosyl-1,4,8,11-tetraazacyclotetradecan-1-yl)methyl)benzene

CAS: 110078-47-2
Formula: C₇₀H₉₀N₈O₁₂S₆
MW: 1427.9 g/mol

VQ-041542

Reference Standard

1,4-Bis((6-chloropyridin-3-yl)methyl)piperazine chemical structure

1,4-Bis((6-chloropyridin-3-yl)methyl)piperazine

CAS: 230617-68-2
Formula: C₁₆H₁₈Cl₂N₄
MW: 337.2 g/mol

VQ-045081

Reference Standard

1,4-Bis(2-hydroxyethyl)piperazine chemical structure

1,4-Bis(2-hydroxyethyl)piperazine

CAS: 122-96-3
Formula: C₈H₁₈N₂O₂
MW: 174.24 g/mol

VQ-032371

Reference Standard

1,4-Bis(3-(2-chloro-10H-phenothiazin-10-yl)propyl)piperazine chemical structure

1,4-Bis(3-(2-chloro-10H-phenothiazin-10-yl)propyl)piperazine

CAS: 500305-74-8
Formula: C₃₄H₃₄Cl₂N₄S₂
MW: 633.7 g/mol

VQ-033337

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