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-Bromo-4H-benzo[4,5]cyclohepta[1,2-b]thiophen-4-one chemical structure](/media/structures/GEMIJYIZSIKGMP-UHFFFAOYSA-N.svg)
2-Bromo-4H-benzo[4,5]cyclohepta[1,2-b]thiophen-4-one
- CAS
- 126939-25-1
- Formula
- C13H7BrOS
- MW
- 291.16 g/mol
VQ-031394
![2-Bromo-5-methyl-4,5,6,7-tetrahydrothiazolo[5,4-c]pyridine chemical structure](/media/structures/VJHFJWBPUCAWHS-UHFFFAOYSA-N.svg)
2-Bromo-5-methyl-4,5,6,7-tetrahydrothiazolo[5,4-c]pyridine
- CAS
- 143150-92-9
- Formula
- C7H9BrN2S
- MW
- 233.13 g/mol
VQ-036880
![2-Bromo-5H-Pyrrolo[2,3-b]Pyrazine chemical structure](/media/structures/KTKMLXBEBKGQGL-UHFFFAOYSA-N.svg)
![2-Bromo-N-[2-(2-chlorobenzoyl)-4-nitrophenyl]acetamide chemical structure](/media/structures/XSTMFEOLMKEEMU-UHFFFAOYSA-N.svg)
2-Bromo-N-[2-(2-chlorobenzoyl)-4-nitrophenyl]acetamide
- CAS
- 52130-87-7
- Formula
- C15H10BrClN2O4
- MW
- 397.61 g/mol
VQ-044835
![2-Butyl-1,3-diazaspiro[4.4]non-1-en-4-one chemical structure](/media/structures/IWKWOYOVCXHXSS-UHFFFAOYSA-N.svg)
![2-Butyl-1,3-diazaspiro[4.4]non-1-en-4-one Hydrochloride chemical structure](/media/structures/WWRHZLCKSVQRBG-UHFFFAOYSA-N.svg)
2-Butyl-1,3-diazaspiro[4.4]non-1-en-4-one Hydrochloride
- CAS
- 151257-01-1
- Formula
- C11H19ClN2O
- MW
- 230.73 g/mol
VQ-022860
2-Carboxy Ethyl 3 Cyano-5 Methyl Hexanoicacid Ethyl Ester
- CAS
- 186038-82-4
- Formula
- C13H21NO4
- MW
- 255.31 g/mol
VQ-041642
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