Impurity Reference Standards
API Impurities
Process impurities, isomers, degradants and related compounds for thousands of APIs, characterised for method development, validation and QC release.
(1-Methyl-4-piperidinyl)[1-(2-phenylethyl)-1H-imidazol-2-yl]methanone
- CAS
- 147082-78-8
- Formula
- C18H23N3O
- MW
- 297.4 g/mol
ZX-023191
(1-Methylpiperidin-4-yl)(pyridin-2-yl)methanone
- CAS
- 517875-04-6
- Formula
- C12H16N2O
- MW
- 204.27 g/mol
ZX-030183
(1,2,6,7,-Tetrahydro-8H-indeno[5,4-b]furan-8-ylidene)acetonitrile
- CAS
- 221530-44-5
- Formula
- C13H11NO
- MW
- 197.23 g/mol
ZX-032095
(1'S,2S)-2-(2'-Tosyl-1',2'-dihydroxyethyl)-6-fluorochromane
- CAS
- 905454-58-2
- Formula
- C18H19FO5S
- MW
- 366.4 g/mol
ZX-030780
(11-(1-Methylpiperidin-4-ylidene)-6,11-dihydro-5H-benzo[d]imidazo[1,2-a]azepine-2,3-diyl)dimethanol
- CAS
- 147083-92-9
- Formula
- C20H25N3O2
- MW
- 339.4 g/mol
ZX-020530
(11Beta)-9-Fluoro-11,21-dihydroxy-16-methyl-pregna-1,4,16-triene-3,20-dione
- CAS
- 59860-99-0
- Formula
- C22H27FO4
- MW
- 374.4 g/mol
ZX-028673
(12-Oxo-5,6,11,12-tetrahydrobenzo[6,7]azepino[4,3-b]indole-4,10-diyl)bis((4-bromophenyl)methanone)
- CAS
- 1644279-16-2
- Formula
- C30H18Br2N2O3
- MW
- 614.3 g/mol
ZX-023647
(17RS)-Betamethasone 20-hydroxy 21-acid impurity
- CAS
- 1155886-49-9
- Formula
- C22H29FO5
- MW
- 392.5 g/mol
ZX-023106
(1a-Methyl-6-oxo-3-phenoxy-1,1a,6,6a-tetrahydroindeno[1,2-b]azirine-6a-carbonyl)glycine
- CAS
- 2301113-15-3
- Formula
- C19H16N2O5
- MW
- 352.3 g/mol
ZX-026834
(1E,5E)-N-Methyl-N-(naphthalen-1-ylmethyl)-1,6-diphenylhexa-1,5-dien-3-amine
- CAS
- 2519489-92-8
- Formula
- C30H29N
- MW
- 403.6 g/mol
ZX-025743
(1R,2R,4R,5R,7S,10R,11S,14S,16S,18S,19S)-5,7-Dihydroxy-10,14-dimethylhexacyclo[9.8.0.02,4.05,10.014,19.016,18]nonadecan-15-one
- CAS
- 82543-16-6
- Formula
- C21H30O3
- MW
- 330.5 g/mol
ZX-024388
(1R,2R)-1-(2,3-Dihydrobenzo[b][1,4]dioxin-6-yl)-2-octanamido-3-(pyrrolidin-1-yl)propyl octanoate
- CAS
- 2193052-06-9
- Formula
- C31H50N2O5
- MW
- 530.7 g/mol
ZX-029217
(1R,2R)-2-(2-Carboxyethyl)-1,2,3,4-tetrahydro-6,7-dimethoxy-2-methyl-1-veratrylisoquinolinium.
- CAS
- 1075727-04-6
- Formula
- C24H31NO6
- MW
- 429.5 g/mol
ZX-020724
(1R,2R)-2-(3,4-Difluorophenyl)cyclopropanecarboxamide
- CAS
- 1006376-62-0
- Formula
- C10H9F2NO
- MW
- 197.18 g/mol
ZX-022909
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