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
![10-Methoxy-4H-benzo[4,5]cyclohepta[1,2- b]thiophen-4-one chemical structure](/media/structures/ZSGIVIUNURDDJL-UHFFFAOYSA-N.svg)
10-Methoxy-4H-benzo[4,5]cyclohepta[1,2- b]thiophen-4-one
- CAS
- 59743-84-9
- Formula
- C14H10O2S
- MW
- 242.29 g/mol
VQ-031391
![10,11-Dibromo-10,11-dihydro-5H-dibenzo[b,f]azepine](/media/pack/1011-dibromo-1011-dihydro-5h-dibenzobfazepine.svg?v=3)
10,11-Dibromo-10,11-dihydro-5H-dibenzo[b,f]azepine
- CAS
- 1261034-93-8
- Formula
- C14H11Br2N
- MW
- 353.05 g/mol
VQ-041267
![10,11-Dibromo-10,11-dihydro-5H-dibenzo[b,f]azepine-5-carbonyl Chloride chemical structure](/media/structures/VZIGUCCPGWDDML-UHFFFAOYSA-N.svg)
10,11-Dibromo-10,11-dihydro-5H-dibenzo[b,f]azepine-5-carbonyl Chloride
- CAS
- 40421-03-2
- Formula
- C15H10Br2ClNO
- MW
- 415.5 g/mol
VQ-023432
![10,11-Dihydro-5H-dibenzo[b,f]azepin-10-ol chemical structure](/media/structures/NPKCAMZGRRHFTJ-UHFFFAOYSA-N.svg)
![10,11-Dihydroxy-10,11-dihydro-5H-dibenzo[a,d][7]annulen-5-one chemical structure](/media/structures/AVHKWKJVWBLNPQ-UHFFFAOYSA-N.svg)
10,11-Dihydroxy-10,11-dihydro-5H-dibenzo[a,d][7]annulen-5-one
- CAS
- 92496-64-5
- Formula
- C15H12O3
- MW
- 240.25 g/mol
VQ-044882
![11-(1-Methylpiperidin-4-ylidene)-6,11-dihydro-5H-benzo[d]imidazo[1,2-a]azepine chemical structure](/media/structures/GKTUOCXSVQTQJF-UHFFFAOYSA-N.svg)
11-(1-Methylpiperidin-4-ylidene)-6,11-dihydro-5H-benzo[d]imidazo[1,2-a]azepine
- CAS
- 147083-36-1
- Formula
- C18H21N3
- MW
- 279.4 g/mol
VQ-024184
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