Catalog division
Impurity Reference Standards
Pharmacopoeial impurities, nitrosamines, metabolites, labelled internal standards and API working standards, each backed by analytical data for method development and QC.
4-(2-(tert-Butylamino)-1-ethoxyethyl)-2-(hydroxymethyl)phenol
- CAS
- 1221742-55-7
- Formula
- C15H25NO3
- MW
- 267.36 g/mol
ZX-019810
4-(2-Amino-1-hydroxyethyl)-2-hydroxyphenyl hydrogen sulfate
- CAS
- 35538-87-5
- Formula
- C8H11NO6S
- MW
- 249.24 g/mol
ZX-025868
4-(2-Bromo-4,5-dimethoxybenzyl)-4-(2-(2-(6,6-dimethylbicyclo[3.1.1]hept-2-en-2-yl)ethoxy)ethyl)morpholin-4-ium Bromide
- CAS
- 1235355-01-7
- Formula
- C26H39Br2NO4
- MW
- 589.4 g/mol
ZX-022518
4-(2-Chlorophenyl)-1,4-dihydro-2-(hydroxymethyl)-6-methyl-3,5-pyridinedicarboxylic Acid 3-Ethyl 5-Methyl Ester
- CAS
- 79781-21-8
- Formula
- C18H20ClNO5
- MW
- 365.8 g/mol
ZX-023260
4-(2-Chlorophenyl)cyclohexane-1-carboxylic Acid
- CAS
- 1368749-51-2
- Formula
- C13H15ClO2
- MW
- 238.71 g/mol
ZX-045882
4-(2-Methylpropoxy)-1,3-benzenedicarbothioamide
- CAS
- 1330632-46-6
- Formula
- C12H16N2OS2
- MW
- 268.4 g/mol
ZX-024702
4-(2,3-Dichlorophenyl)-2,6-dimethyl-1,4-dihydropyridine-3,5-dicarboxylic Acid
- CAS
- 138279-32-0
- Formula
- C15H13Cl2NO4
- MW
- 342.2 g/mol
ZX-020246
4-(2,3-Dichlorophenyl)-2,6-dimethyl-3-pyridinecarboxylic acid methyl ester
- CAS
- 105383-68-4
- Formula
- C15H13Cl2NO2
- MW
- 310.2 g/mol
ZX-021246
4-(2,3-Dichlorophenyl)-5-(methoxycarbonyl)-2,6-dimethylnicotinic acid
- CAS
- 91854-02-3
- Formula
- C16H13Cl2NO4
- MW
- 354.2 g/mol
ZX-023983
4-(2,3-Dichlorophenyl)-N,N-dimethylpiperazine-1-carboxamide
- CAS
- 2327471-74-7
- Formula
- C13H17Cl2N3O
- MW
- 302.2 g/mol
ZX-021055
4-(2,4-Dichloro-5-methoxyphenylamino)-6,7-dimethoxyquinoline-3-carbonitrile
- CAS
- 380843-12-9
- Formula
- C19H15Cl2N3O3
- MW
- 404.2 g/mol
ZX-023613
4-(3-(1-(4-Cyano-3-(trifluoromethyl)phenyl)-3-methyl-4-oxo-2-thioxo-1,2,3,4-tetrahydroquinazolin-7-yl)-4,4-dimethyl-5-oxo-2-thioxoimidazolidin-1-yl)-2-(trifluoromethyl)benzonitrile
- CAS
- 2810090-73-2
- Formula
- C30H18F6N6O2S2
- MW
- 672.6 g/mol
ZX-020274
4-(3-(2,5-Dichloro-4,6-dimethylpyridin-3-yl)-1,2,4-oxadiazol-5-yl)-2-methoxy-6-nitrophenol
- CAS
- 1391712-50-7
- Formula
- C16H12Cl2N4O5
- MW
- 411.2 g/mol
ZX-022360
4-(3-(4-(Cyclopropanecarbonyl)piperazine-1-carbonyl)-4-fluorobenzoyl)phthalazin-1(2H)-one
- CAS
- 1460272-52-9
- Formula
- C24H21FN4O4
- MW
- 448.4 g/mol
ZX-030921
4-(3-(4-Cyano-3-(trifluoromethyl)phenyl)-5,5-dimethyl-2,4-dioxoimidazolidin-1-yl)-2-fluorobenzamide
- CAS
- 1242137-17-2
- Formula
- C20H14F4N4O3
- MW
- 434.3 g/mol
ZX-021572
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