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
4-Nitrobenzyl (2S,4S)-2-(dimethylcarbamoyl)-4-mercaptopyrrolidine-1-carboxylate
- CAS
- 96034-64-9
- Formula
- C15H19N3O5S
- MW
- 353.4 g/mol
VQ-049046
4-Nitrophenyl (4-(3-oxomorpholino)phenyl)carbamate
- CAS
- 635301-86-9
- Formula
- C17H15N3O6
- MW
- 357.32 g/mol
VQ-038471
4-Nitrophenyl 2-((furan-2-ylmethyl)sulfonyl)acetate
- CAS
- 163802-30-0
- Formula
- C13H11NO7S
- MW
- 325.3 g/mol
VQ-037865
![4-Oxo-3-[(Phenylmethyl)oxy]-4H-pyran-2-carboxylic acid chemical structure](/media/structures/KJSJBKBZMGSIPT-UHFFFAOYSA-N.svg)
4-Oxo-3-[(Phenylmethyl)oxy]-4H-pyran-2-carboxylic acid
- CAS
- 119736-16-2
- Formula
- C13H10O5
- MW
- 246.21 g/mol
VQ-043922
4-Oxo-6-(2-oxo-5-vinylpyrrolidin-1-yl)hexanoic Acid
- CAS
- 2512190-67-7
- Formula
- C12H17NO4
- MW
- 239.27 g/mol
VQ-024004
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