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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.

28,554products

6sub-categories

2,746in stock

COA + SDSwith every lot

API Impurities 14,252 Pharmacopeial Impurities (EP / USP / BP) 4,401 Nitrosamine Impurities 650 Stable Isotope Labelled Standards (Deuterated, 13C, 15N) 1,612 Metabolites & Degradation Products 4,146 API Reference Standards 3,493

Reference Standard

7-((4AS,7aS)-1-(2-Carboxyethyl)octahydro-6H-pyrrolo[3,4-b]pyridin-6-yl)-1-cyclopropyl-6-fluoro-8-methoxy-4-oxo-1,4-dihydroquinoline-3-carboxylic Acid chemical structure

7-((4AS,7aS)-1-(2-Carboxyethyl)octahydro-6H-pyrrolo[3,4-b]pyridin-6-yl)-1-cyclopropyl-6-fluoro-8-methoxy-4-oxo-1,4-dihydroquinoline-3-carboxylic Acid

CAS: 2489671-20-5
Formula: C₂₄H₂₈FN₃O₆
MW: 473.5 g/mol

VQ-049170

Reference Standard

7-(2-((3,4-Dihydroxyphenethyl)amino)ethyl)-1,3-dimethyl-3,7-dihydro-1H-purine-2,6-dione Hydrochloride

7-(2-((3,4-Dihydroxyphenethyl)amino)ethyl)-1,3-dimethyl-3,7-dihydro-1H-purine-2,6-dione Hydrochloride

CAS: 62932-01-8
Formula: C₁₇H₂₁N₅O₄.HCl
MW: 395.84 g/mol

VQ-036077

Reference Standard

7-(2-Methyl-4-nitrophenoxy)-[1,2,4]triazolo[1,5-a]pyridine chemical structure

7-(2-Methyl-4-nitrophenoxy)-[1,2,4]triazolo[1,5-a]pyridine

CAS: 937263-44-0
Formula: C₁₃H₁₀N₄O₃
MW: 270.24 g/mol

VQ-044778

Reference Standard

7-(3-(2-Carboxyethyl)-4-(hydroxyamino)pyrrolidin-1-yl)-1-cyclopropyl-6-fluoro-8-methoxy-4-oxo-1,4-dihydroquinoline-3-carboxylic acid chemical structure

7-(3-(2-Carboxyethyl)-4-(hydroxyamino)pyrrolidin-1-yl)-1-cyclopropyl-6-fluoro-8-methoxy-4-oxo-1,4-dihydroquinoline-3-carboxylic acid

CAS: 1395056-42-4
Formula: C₂₁H₂₄FN₃O₇
MW: 449.4 g/mol

VQ-035016

Reference Standard

7-(3-Chloropropoxy)-4-(2,4-dichloro-5-methoxyanilino)-6-methoxyquinoline-3-carbonitrile chemical structure

7-(3-Chloropropoxy)-4-(2,4-dichloro-5-methoxyanilino)-6-methoxyquinoline-3-carbonitrile

CAS: 380844-49-5
Formula: C₂₁H₁₈Cl₃N₃O₃
MW: 466.7 g/mol

VQ-024624

Reference Standard

7-(4-(4-(1-Oxidobenzo[b]thiophen-4-yl)piperazin-1-yl)butoxy)quinolin-2(1H)-one chemical structure

7-(4-(4-(1-Oxidobenzo[b]thiophen-4-yl)piperazin-1-yl)butoxy)quinolin-2(1H)-one

CAS: 1191900-51-2
Formula: C₂₅H₂₇N₃O₃S
MW: 449.6 g/mol

VQ-021871

Reference Standard

7-(4-Bromobenzoyl) indole chemical structure

7-(4-Bromobenzoyl) indole

CAS: 91714-50-0
Formula: C₁₅H₁₀BrNO
MW: 300.15 g/mol

VQ-021296

Reference Standard

7-(4-Chlorobutoxy)-3,4-dihydro-2(1H)-quinolinone chemical structure

7-(4-Chlorobutoxy)-3,4-dihydro-2(1H)-quinolinone

CAS: 120004-79-7
Formula: C₁₃H₁₆ClNO₂
MW: 253.72 g/mol

VQ-020819

Reference Standard

7-(4-Iodobutoxy)quinolin-2(1H)-one chemical structure

7-(4-Iodobutoxy)quinolin-2(1H)-one

CAS: 1191901-09-3
Formula: C₁₃H₁₄INO₂
MW: 343.16 g/mol

VQ-029499

Reference Standard

7-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)-1-(2,2,2-trifluoroethyl)-1H-indazol-3-amine

7-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)-1-(2,2,2-trifluoroethyl)-1H-indazol-3-amine

CAS: 3025145-62-1
Formula: C₁₅H₁₉BF₃N₃O₂
MW: 341.14 g/mol

VQ-037927

Reference Standard

7-(Benzyloxy)-3-(4-methoxy-2-nitrophenyl)-1,2-dihydronaphthalene chemical structure

7-(Benzyloxy)-3-(4-methoxy-2-nitrophenyl)-1,2-dihydronaphthalene

CAS: 722536-75-6
Formula: C₂₄H₂₁NO₄
MW: 387.4 g/mol

VQ-036919

Reference Standard

7-(Benzyloxy)-3-bromo-1,2-dihydronaphthalene chemical structure

7-(Benzyloxy)-3-bromo-1,2-dihydronaphthalene

CAS: 722536-73-4
Formula: C₁₇H₁₅BrO
MW: 315.2 g/mol

VQ-048161

Reference Standard

7-(But-2-yn-1-yl)-3-methyl-8-(methylamino)-1-((4-methylquinazolin-2-yl)methyl)-3,7-dihydro-1H-purine-2,6-dione chemical structure

7-(But-2-yn-1-yl)-3-methyl-8-(methylamino)-1-((4-methylquinazolin-2-yl)methyl)-3,7-dihydro-1H-purine-2,6-dione

CAS: 2468656-63-3
Formula: C₂₁H₂₁N₇O₂
MW: 403.4 g/mol

VQ-026479

Reference Standard

7-(But-3-en-1-yloxy)-3,4-dihydroquinolin-2(1H)-one chemical structure

7-(But-3-en-1-yloxy)-3,4-dihydroquinolin-2(1H)-one

CAS: 1359829-23-4
Formula: C₁₃H₁₅NO₂
MW: 217.26 g/mol

VQ-020822

Reference Standard

7-Acetamido-1,3,5-trimethyladamantane chemical structure

7-Acetamido-1,3,5-trimethyladamantane

CAS: 15210-64-7
Formula: C₁₅H₂₅NO
MW: 235.36 g/mol

VQ-026607

Reference Standard

7-Alpha-Thiomethyl Spironolactone chemical structure

7-Alpha-Thiomethyl Spironolactone

CAS: 38753-77-4
Formula: C₂₃H₃₂O₃S
MW: 388.6 g/mol

VQ-033943

Reference Standard

7-Amino Clonazepam chemical structure

7-Amino Clonazepam

CAS: 4959-17-5
Formula: C₁₅H₁₂ClN₃O
MW: 285.73 g/mol

VQ-044990

Reference Standard

7-Amino-1-cyclopropyl-6-fluoro-4-oxo-1,4-dihydroquinoline-3-carboxylic Acid chemical structure

7-Amino-1-cyclopropyl-6-fluoro-4-oxo-1,4-dihydroquinoline-3-carboxylic Acid

CAS: 105674-91-7
Formula: C₁₃H₁₁FN₂O₃
MW: 262.24 g/mol

VQ-043865

Reference Standard

7-Amino-1-cyclopropyl-6-fluoro-8-methoxy-4-oxo-1,4-dihydroquinoline-3-carboxylic Acid chemical structure

7-Amino-1-cyclopropyl-6-fluoro-8-methoxy-4-oxo-1,4-dihydroquinoline-3-carboxylic Acid

CAS: 172426-88-9
Formula: C₁₄H₁₃FN₂O₄
MW: 292.26 g/mol

VQ-026784

Reference Standard

7-Amino-1-cyclopropyl-6-fluoro-8-methoxyquinolin-4(1H)-one chemical structure

7-Amino-1-cyclopropyl-6-fluoro-8-methoxyquinolin-4(1H)-one

CAS: 1467586-86-2
Formula: C₁₃H₁₃FN₂O₂
MW: 248.25 g/mol

VQ-038514

Reference Standard

7-Amino-3 chloromethyl-3-cephem-4-carboxylic Acid p-Methoxybenzyl Ester Hydrochloride chemical structure

7-Amino-3 chloromethyl-3-cephem-4-carboxylic Acid p-Methoxybenzyl Ester Hydrochloride

CAS: 113479-65-5
Formula: C₁₆H₁₈Cl₂N₂O₄S
MW: 405.3 g/mol

VQ-047708

Reference Standard

7-Amino-3-methyl-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic Acid chemical structure

7-Amino-3-methyl-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic Acid

CAS: 26395-99-3
Formula: C₈H₁₀N₂O₃S
MW: 214.24 g/mol

VQ-039258

Reference Standard

7-Amino-3-vinyl-3-cephem-4-carboxylic Acid chemical structure

7-Amino-3-vinyl-3-cephem-4-carboxylic Acid

CAS: 79349-82-9
Formula: C₉H₁₀N₂O₃S
MW: 226.25 g/mol

VQ-021096

Reference Standard

7-Amino-8-oxo-3-vinyl-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic Acid chemical structure

7-Amino-8-oxo-3-vinyl-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic Acid

CAS: 1214070-06-0
Formula: C₉H₁₀N₂O₃S
MW: 226.25 g/mol

VQ-044384

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