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
![9,10-Dihydro-4H-benzo[4,5]cyclohepta[1,2-b]thiophen-4-one chemical structure](/media/structures/JAGBUENUSNSSFW-UHFFFAOYSA-N.svg)
9,10-Dihydro-4H-benzo[4,5]cyclohepta[1,2-b]thiophen-4-one
- CAS
- 1622-55-5
- Formula
- C13H10OS
- MW
- 214.28 g/mol
VQ-031390
![9,10-Dihydroxy-3-isobutyl-1,3,4,6,7,11b-hexahydro-2H-pyrido[2,1-a]isoquinolin-2-one chemical structure](/media/structures/HKXSWCIZVQFEQQ-UHFFFAOYSA-N.svg)
9,10-Dihydroxy-3-isobutyl-1,3,4,6,7,11b-hexahydro-2H-pyrido[2,1-a]isoquinolin-2-one
- CAS
- 89929-27-1
- Formula
- C17H23NO3
- MW
- 289.4 g/mol
VQ-042464
![9,10-Dimethoxy-6,7-dihydro-2H-pyrimido[6,1-a]isoquinoline-2,4(3H)-dione chemical structure](/media/structures/HLTDPZGESWXQLF-UHFFFAOYSA-N.svg)
9,10-Dimethoxy-6,7-dihydro-2H-pyrimido[6,1-a]isoquinoline-2,4(3H)-dione
- CAS
- 68619-18-1
- Formula
- C14H14N2O4
- MW
- 274.27 g/mol
VQ-048219
9a-Fluoro-17a-methylandrost-4-ene-3a,6β,11β,17β-tetrol
- CAS
- 148505-57-1
- Formula
- C20H31FO4
- MW
- 354.5 g/mol
VQ-044548
9β,11β-Epoxy-17,21-dihydroxy-16β-methyl-pregn-4-ene-3,20-dione
- CAS
- 114488-14-1
- Formula
- C22H30O5
- MW
- 374.5 g/mol
VQ-035055
![a-Thio-4-[2-(5-ethyl-2-pyridinyl)ethoxy]benzenepropanoic Acid Disulfide chemical structure](/media/structures/NFIBWZBYFXKDCT-UHFFFAOYSA-N.svg)
a-Thio-4-[2-(5-ethyl-2-pyridinyl)ethoxy]benzenepropanoic Acid Disulfide
- CAS
- 1229114-67-3
- Formula
- C36H40N2O6S2
- MW
- 660.8 g/mol
VQ-045095
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