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
2,4-Dimethyl-1H-pyrrole-3-carboxylic Acid Ethyl Ester
- CAS
- 2199-51-1
- Formula
- C9H13NO2
- MW
- 167.2 g/mol
VQ-039276
![2,4-Dioxo-3-azaspiro[5.5]undecane-1-carboxamide](/media/pack/24-dioxo-3-azaspiro5-5undecane-1-carboxamide.svg?v=3)
2,4-Dioxo-3-azaspiro[5.5]undecane-1-carboxamide
- CAS
- 1087760-14-2
- Formula
- C11H16N2O3
- MW
- 224.26 g/mol
VQ-037465
![2,4-Dioxo-3-azaspiro[5.5]undecane-1,5-dicarboxamide chemical structure](/media/structures/XTUHAHGFAZBXCN-UHFFFAOYSA-N.svg)
2,4-Dioxo-3-azaspiro[5.5]undecane-1,5-dicarboxamide
- CAS
- 872696-79-2
- Formula
- C12H17N3O4
- MW
- 267.28 g/mol
VQ-037464
![2,4-Pyrimidinediamine, 5-chloro-N4-[2-(dimethylphosphinyl)phenyl]-N2-[2-methoxy-4-[4-(1-piperazinyl)-1-piperidinyl]phenyl] chemical structure](/media/structures/RWZBHSUFXJNDSS-UHFFFAOYSA-N.svg)
2,4-Pyrimidinediamine, 5-chloro-N4-[2-(dimethylphosphinyl)phenyl]-N2-[2-methoxy-4-[4-(1-piperazinyl)-1-piperidinyl]phenyl]
- CAS
- 1197958-75-0
- Formula
- C28H37ClN7O2P
- MW
- 570.1 g/mol
VQ-024642
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.