Impurities & Reference Standards
API Impurities
Source 1942 api impurities for research, QC and production, documented with COA and SDS.
14,098products
1,516in stock
COA + SDSwith every lot
1-(((2R,3S)-2-(2,4-Difluorophenyl)-3-methyloxiran-2-yl)methyl)-1H-1,2,4-triazole
- CAS
- 127000-90-2
- Formula
- C12H11F2N3O
- MW
- 251.23 g/mol
VQ-025497
1-(((2R,3S)-2-(2,5-Difluorophenyl)-3-methyloxiran-2-yl)methyl)-1H-1,2,4-triazole
- CAS
- 241479-73-2
- Formula
- C12H11F2N3O
- MW
- 251.23 g/mol
VQ-048151
1-((1,3-Dichloropropan-2-yl)oxy)-3-(isopropylamino)propan-2-ol
- CAS
- 3048706-15-3
- Formula
- C9H19Cl2NO2
- MW
- 244.16 g/mol
VQ-027671
1-((1S,2S)-1-Cyano-2-methylcyclopropyl)-5-((S)-2,2-dimethyltetrahydro-2H-pyran-4-yl)-N-methyl-N-phenyl-1H-indole-2-carboxamide
- CAS
- 2212021-81-1
- Formula
- C28H31N3O2
- MW
- 441.6 g/mol
VQ-049332
1-((2-(2,4-Difluorophenyl)-3-methyloxiran-2-yl)methyl)-1H-1,2,4-triazole
- CAS
- 124627-86-7
- Formula
- C12H11F2N3O
- MW
- 251.23 g/mol
VQ-044886
1-((2-Chlorophenyl)(phenyl)methyl)-4-(3-methylbenzyl)piperazine
- CAS
- 713071-37-5
- Formula
- C25H27ClN2
- MW
- 390.9 g/mol
VQ-031754
1-((2-Chlorophenyl)diphenylmethyl)-2-methyl-1H-imidazole
- CAS
- 98751-53-2
- Formula
- C23H19ClN2
- MW
- 358.9 g/mol
VQ-022245
1-((2-Fluorophenyl)carbamoyl)cyclopropane-1-carboxylic Acid
- CAS
- 918642-61-2
- Formula
- C11H10FNO3
- MW
- 223.2 g/mol
VQ-024722
![1-((2'-Cyano-[1,1'-biphenyl]-4-yl)methyl)-2-ethoxy-1H-benzo[d]imidazole-7-carboxylic Acid chemical structure](/media/structures/IXRVVLKQIVDIEM-UHFFFAOYSA-N.svg)
1-((2'-Cyano-[1,1'-biphenyl]-4-yl)methyl)-2-ethoxy-1H-benzo[d]imidazole-7-carboxylic Acid
- CAS
- 632322-61-3
- Formula
- C24H19N3O3
- MW
- 397.4 g/mol
VQ-034955
![1-((2R,5R)-5-((7H-Pyrrolo[2,3-d]pyrimidin-4-yl)amino)-2-methylpiperidin-1-yl)prop-2-en-1-one chemical structure](/media/structures/CBRJPFGIXUFMTM-GHMZBOCLSA-N.svg)
1-((2R,5R)-5-((7H-Pyrrolo[2,3-d]pyrimidin-4-yl)amino)-2-methylpiperidin-1-yl)prop-2-en-1-one
- CAS
- 1792181-98-6
- Formula
- C15H19N5O
- MW
- 285.34 g/mol
VQ-033578
![1-((2S,5S)-5-((7H-Pyrrolo[2,3-d]pyrimidin-4-yl)amino)-2-methylpiperidin-1-yl)prop-2-en-1-one chemical structure](/media/structures/CBRJPFGIXUFMTM-QWRGUYRKSA-N.svg)
1-((2S,5S)-5-((7H-Pyrrolo[2,3-d]pyrimidin-4-yl)amino)-2-methylpiperidin-1-yl)prop-2-en-1-one
- CAS
- 1792181-97-5
- Formula
- C15H19N5O
- MW
- 285.34 g/mol
VQ-033577
1-((3-Fluorophenyl)carbamoyl)cyclopropane-1-carboxylic Acid
- CAS
- 1247859-37-5
- Formula
- C11H10FNO3
- MW
- 223.2 g/mol
VQ-035349
1-((3R,5R)-6-Carboxy-3,5-dihydroxyhexyl)-5-(4-fluorophenyl)-2-isopropyl-4-phenyl-1H-pyrrole-3-carboxylic Acid
- CAS
- 1821498-27-4
- Formula
- C27H30FNO6
- MW
- 483.5 g/mol
VQ-029255
![1-((3R,5S,8R,9S,10S,13S,14S,17S)-10,13-Dimethylhexadecahydrospiro[cyclopenta[a]phenanthrene-3,2'-oxiran]-17-yl)ethan-1-one](/media/pack/1-3r5s8r9s10s13s14s17s-1013-dimethylhexadecahydrospirocyclopentaaphenanthrene-32-oxiran.svg?v=3)
1-((3R,5S,8R,9S,10S,13S,14S,17S)-10,13-Dimethylhexadecahydrospiro[cyclopenta[a]phenanthrene-3,2'-oxiran]-17-yl)ethan-1-one
- CAS
- 148256-45-5
- Formula
- C22H34O2
- MW
- 330.5 g/mol
VQ-030942
![1-((3S,4R)-3-Ethyl-4-(3-tosyl-3H-imidazo[1,2-a]pyrrolo[2,3-e]pyrazin-8-yl)pyrrolidin-1-yl)-2,2,2-trifluoroethan-1-one chemical structure](/media/structures/LNUKYJWZESHVHA-WBVHZDCISA-N.svg)
1-((3S,4R)-3-Ethyl-4-(3-tosyl-3H-imidazo[1,2-a]pyrrolo[2,3-e]pyrazin-8-yl)pyrrolidin-1-yl)-2,2,2-trifluoroethan-1-one
- CAS
- 2768445-19-6
- Formula
- C23H22F3N5O3S
- MW
- 505.5 g/mol
VQ-034491
1-((4-Aminobenzenemethane)sulfonyl)pyrrolidine
- CAS
- 334981-10-1
- Formula
- C11H16N2O2S
- MW
- 240.32 g/mol
VQ-021290
1-((5-Chloropyridin-3-yl)sulfonyl)-5-(2-fluorophenyl)-1H-pyrrole-3-carbaldehyde
- CAS
- 2514742-82-4
- Formula
- C16H10ClFN2O3S
- MW
- 364.8 g/mol
VQ-045026
1-((6-Bromopyridin-3-yl)methyl)-4-ethylpiperazine
- CAS
- 1231930-25-8
- Formula
- C12H18BrN3
- MW
- 284.2 g/mol
VQ-024104
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