Impurities & Reference Standards
API Impurities
Source 1942 api impurities for research, QC and production, documented with COA and SDS.
14,252products
1,516in stock
COA + SDSwith every lot
![Des-O-[2-(diethylamino)ethyl]-1-methoxy Amiodarone chemical structure](/media/structures/GCYPEABHAAFBOL-UHFFFAOYSA-N.svg)
Des-O-[2-(diethylamino)ethyl]-1-methoxy Amiodarone
- CAS
- 1391054-75-3
- Formula
- C20H18I2O4
- MW
- 576.2 g/mol
VQ-029113
Des(methylpiperazinyl-N-methyl) Imatinib Dimer Impurity
- CAS
- 1365802-18-1
- Formula
- C52H48N12O2
- MW
- 873 g/mol
VQ-022835
![Des[(5-methyl-1,3,4-thiadiazol-2-yl)thio] Cefazolin-3-methanol chemical structure](/media/structures/YGQTUWKIILQPEL-GMSGAONNSA-N.svg)
Des[(5-methyl-1,3,4-thiadiazol-2-yl)thio] Cefazolin-3-methanol
- CAS
- 478494-71-2
- Formula
- C11H12N6O5S
- MW
- 340.32 g/mol
VQ-022067
![Des[2-(1H-tetrazol-5-yl)] 2-Cyanolosartan chemical structure](/media/structures/FGCNIDUBRIVYBP-UHFFFAOYSA-N.svg)
![Des[2-(1H-tetrazol-5-yl)] 2-Cyanolosartan Carboxaldehyde chemical structure](/media/structures/UYWHRPJKNDNURE-UHFFFAOYSA-N.svg)
Des[2-(1H-tetrazol-5-yl)] 2-Cyanolosartan Carboxaldehyde
- CAS
- 124750-67-0
- Formula
- C22H20ClN3O
- MW
- 377.9 g/mol
VQ-031645
![Des[2-(2-thienylmethyl)] Eprosartan chemical structure](/media/structures/YOKNWHLCGXMWJI-MDZDMXLPSA-N.svg)
![Des[2-(2-thienylmethyl)] Eprosartan-2-carboxylic Acid](/media/pack/des2-2-thienylmethyl-eprosartan-2-carboxylic-acid.svg?v=3)
Des[2-(2-thienylmethyl)] Eprosartan-2-carboxylic Acid
- CAS
- 1794883-53-6
- Formula
- C19H20N2O6
- MW
- 372.37 g/mol
VQ-043153
Need a price, a spec or a custom compound?
Send us your list — product names or CAS numbers, grade, quantity and destination. Our team replies with a formal quotation, COA and lead time.