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
(S,Z)-7-Chloro-2-(2,2-dimethylcyclopropane-1-carboxamido)hept-2-enoic acid
- CAS
- 877674-77-6
- Formula
- C13H20ClNO3
- MW
- 273.75 g/mol
VQ-044061
(S,Z)-N-(4-((3-Chloro-4-fluorophenyl)amino)-7-((tetrahydrofuran-3-yl)oxy)quinazolin-6-yl)-4-(dimethylamino)but-2-enamide
- CAS
- 1680184-59-1
- Formula
- C24H25ClFN5O3
- MW
- 485.9 g/mol
VQ-021443
(S)-(-)-Alpha-Amino-gamma-butyrolactone hydrobromide
- CAS
- 15295-77-9
- Formula
- C4H8BrNO2
- MW
- 182.02 g/mol
VQ-039325
![(S)-((6-(Propylamino)-4,5,6,7-tetrahydrobenzo[d]thiazol-2-yl)amino)methanol chemical structure](/media/structures/GTIKONPJEMFVCI-QMMMGPOBSA-N.svg)
(S)-((6-(Propylamino)-4,5,6,7-tetrahydrobenzo[d]thiazol-2-yl)amino)methanol
- CAS
- 2489686-91-9
- Formula
- C11H19N3OS
- MW
- 241.36 g/mol
VQ-041583
![(S)-(+)-1-[(4-Chlorophenyl)phenylmethyl]piperazine chemical structure](/media/structures/UZKBSZSTDQSMDR-KRWDZBQOSA-N.svg)
(S)-(+)-1-[(4-Chlorophenyl)phenylmethyl]piperazine
- CAS
- 439858-21-6
- Formula
- C17H19ClN2
- MW
- 286.8 g/mol
VQ-029734
(S)-(+)-1,1-Binaphthyl-2,2-diyl Hydrogen Phosphate
- CAS
- 35193-64-7
- Formula
- C20H13O4P
- MW
- 348.3 g/mol
VQ-034039
(S)-(+)-2-Chlorophenylglycine Methyl Ester Tartrate
- CAS
- 141109-15-1
- Formula
- C13H16ClNO8
- MW
- 349.72 g/mol
VQ-029889
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.