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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-Chloropropyl)-4-(3,4-dichlorophenyl)piperazine chemical structure

1-(3-Chloropropyl)-4-(3,4-dichlorophenyl)piperazine

CAS: 101364-27-6
Formula: C₁₃H₁₇Cl₃N₂
MW: 307.6 g/mol

VQ-034407

Reference Standard

1-(3-Fluoro-4-methoxyphenyl)-1-ethanone chemical structure

1-(3-Fluoro-4-methoxyphenyl)-1-ethanone

CAS: 455-91-4
Formula: C₉H₉FO₂
MW: 168.16 g/mol

VQ-030126

Reference Standard

1-(3-Fluoro-4-morpholinophenyl)-2-methyl-1,4,5,6-tetrahydropyrimidin-5-ol chemical structure

1-(3-Fluoro-4-morpholinophenyl)-2-methyl-1,4,5,6-tetrahydropyrimidin-5-ol

CAS: 2512211-93-5
Formula: C₁₅H₂₀FN₃O₂
MW: 293.34 g/mol

VQ-038072

Reference Standard

1-(3-Fluorophenyl)-2-phenylethan-1-one chemical structure

1-(3-Fluorophenyl)-2-phenylethan-1-one

CAS: 40281-50-3
Formula: C₁₄H₁₁FO
MW: 214.23 g/mol

VQ-035831

Reference Standard

1-(3-Hydroxy-2-methoxyphenyl)-ethanone chemical structure

1-(3-Hydroxy-2-methoxyphenyl)-ethanone

CAS: 204781-71-5
Formula: C₉H₁₀O₃
MW: 166.17 g/mol

VQ-047430

Reference Standard

1-(3-Hydroxybenzyl)-2-methylisoquinolin-6(2H)-one chemical structure

1-(3-Hydroxybenzyl)-2-methylisoquinolin-6(2H)-one

CAS: 2514691-61-1
Formula: C₁₇H₁₅NO₂
MW: 265.31 g/mol

VQ-043254

Reference Standard

1-(3-Hydroxypropyl)-1,3-dihydro-2H-benzo[d]imidazol-2-one chemical structure

1-(3-Hydroxypropyl)-1,3-dihydro-2H-benzo[d]imidazol-2-one

CAS: 62780-92-1
Formula: C₁₀H₁₂N₂O₂
MW: 192.21 g/mol

VQ-048072

Reference Standard

1-(3-Iodo-1-isopropyl-1H-pyrazol-4-yl)ethan-1-one chemical structure

1-(3-Iodo-1-isopropyl-1H-pyrazol-4-yl)ethan-1-one

CAS: 1269440-49-4
Formula: C₈H₁₁IN₂O
MW: 278.09 g/mol

VQ-025539

Reference Standard

1-(3-Methoxyphenyl)-2-methylprop-2-en-1-one chemical structure

1-(3-Methoxyphenyl)-2-methylprop-2-en-1-one

CAS: 1352232-49-5
Formula: C₁₁H₁₂O₂
MW: 176.21 g/mol

VQ-044746

Reference Standard

1-(3-Methoxyphenyl)-4-nitrosopiperazine chemical structure

1-(3-Methoxyphenyl)-4-nitrosopiperazine

CAS: 2763779-41-3
Formula: C₁₁H₁₅N₃O₂
MW: 221.26 g/mol

VQ-032886

Reference Standard

1-(3-Methoxyphenyl)piperazine chemical structure

1-(3-Methoxyphenyl)piperazine

CAS: 16015-71-7
Formula: C₁₁H₁₆N₂O
MW: 192.26 g/mol

VQ-031495

Reference Standard

1-(3-Methoxypropyl)-4-piperidinamine chemical structure

1-(3-Methoxypropyl)-4-piperidinamine

CAS: 179474-79-4
Formula: C₉H₂₀N₂O
MW: 172.27 g/mol

VQ-027411

Reference Standard

1-(3-Methoxypropyl)piperidin-4-ol chemical structure

1-(3-Methoxypropyl)piperidin-4-ol

CAS: 1225518-03-5
Formula: C₉H₁₉NO₂
MW: 173.25 g/mol

VQ-041754

Reference Standard

1-(3-Methyl-1-phenyl-1H-pyrazol-5-yl)piperazine chemical structure

1-(3-Methyl-1-phenyl-1H-pyrazol-5-yl)piperazine

CAS: 401566-79-8
Formula: C₁₄H₁₈N₄
MW: 242.32 g/mol

VQ-028241

Reference Standard

1-(3-Methylbenzyl)piperazine chemical structure

1-(3-Methylbenzyl)piperazine

CAS: 5321-48-2
Formula: C₁₂H₁₈N₂
MW: 190.28 g/mol

VQ-031758

Reference Standard

1-(3-Methylphenyl)piperazine chemical structure

1-(3-Methylphenyl)piperazine

CAS: 41186-03-2
Formula: C₁₁H₁₆N₂
MW: 176.26 g/mol

VQ-040549

Reference Standard

1-(3-Nitro-10,11-dihydro-5H-dibenzo[B,F]azepin-5-YL)ethanone chemical structure

1-(3-Nitro-10,11-dihydro-5H-dibenzo[B,F]azepin-5-YL)ethanone

CAS: 79752-03-7
Formula: C₁₆H₁₄N₂O₃
MW: 282.29 g/mol

VQ-044335

Reference Standard

1-(3-Prop-1-en-2-ylcyclopentyl)ethanone chemical structure

1-(3-Prop-1-en-2-ylcyclopentyl)ethanone

CAS: 31577-86-3
Formula: C₁₀H₁₆O
MW: 152.23 g/mol

VQ-038042

Reference Standard

1-(3,4-Dichlorophenyl)-1,2-dihydronaphthalene chemical structure

1-(3,4-Dichlorophenyl)-1,2-dihydronaphthalene

CAS: 439134-46-0
Formula: C₁₆H₁₂Cl₂
MW: 275.2 g/mol

VQ-033828

Reference Standard

1-(3,4-Dichlorophenyl)piperazine Hydrochloride chemical structure

1-(3,4-Dichlorophenyl)piperazine Hydrochloride

CAS: 88138-89-0
Formula: C₁₀H₁₃Cl₃N₂
MW: 267.6 g/mol

VQ-043048

Reference Standard

1-(3,4-Diethoxyphenyl)-2-(methyl sulfonyl)ethanamine chemical structure

1-(3,4-Diethoxyphenyl)-2-(methyl sulfonyl)ethanamine

CAS: 1284768-38-2
Formula: C₁₃H₂₁NO₄S
MW: 287.38 g/mol

VQ-029198

Reference Standard

1-(3,4-Dihydroxyphenyl)-2-(methylamino)ethyl Hydrogen Sulfate chemical structure

1-(3,4-Dihydroxyphenyl)-2-(methylamino)ethyl Hydrogen Sulfate

CAS: 2448348-57-8
Formula: C₉H₁₃NO₆S
MW: 263.27 g/mol

VQ-044739

Reference Standard

1-(3,4-Dihydroxyphenyl)-2-hydroxyethan-1-one chemical structure

1-(3,4-Dihydroxyphenyl)-2-hydroxyethan-1-one

CAS: 29477-54-1
Formula: C₈H₈O₄
MW: 168.15 g/mol

VQ-032205

Reference Standard

1-(3,4-Dimethoxy-5-nitrophenyl)ethanone chemical structure

1-(3,4-Dimethoxy-5-nitrophenyl)ethanone

CAS: 134610-32-5
Formula: C₁₀H₁₁NO₅
MW: 225.2 g/mol

VQ-032835

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