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
![1-Methyl-1,4-dihydro-2H-pyrido[2,3-d][1,3]oxazin-2-one chemical structure](/media/structures/DATWPOFGEWIKFI-UHFFFAOYSA-N.svg)
1-Methyl-1,4-dihydro-2H-pyrido[2,3-d][1,3]oxazin-2-one
- CAS
- 2734004-61-4
- Formula
- C8H8N2O2
- MW
- 164.16 g/mol
VQ-022867
![1-Methyl-1H-benzo[d]imidazole-5-carboxylic acid chemical structure](/media/structures/KAJLCBKTWRUQOI-UHFFFAOYSA-N.svg)
1-Methyl-3-(4-methylbenzoyl)-1H-pyrrol-2-yl Propionate
- CAS
- 2512220-17-4
- Formula
- C16H17NO3
- MW
- 271.3 g/mol
VQ-034322
1-Methyl-3-isopropenylcyclopentyl-1-carboxaldehyde
- CAS
- 59514-63-5
- Formula
- C10H16O
- MW
- 152.23 g/mol
VQ-038041
1-Methyl-4-nitro-3-propyl-1H-pyrazole-5-carboxamide
- CAS
- 139756-01-7
- Formula
- C8H12N4O3
- MW
- 212.21 g/mol
VQ-028020
1-Methyl-4-nitro-3-propyl-1H-pyrazole-5-carboxylic acid
- CAS
- 139756-00-6
- Formula
- C8H11N3O4
- MW
- 213.19 g/mol
VQ-023752
1-Methyl-4-nitro-5-propyl-1H-pyrazole-3-carboxamide
- CAS
- 247583-72-8
- Formula
- C8H12N4O3
- MW
- 212.21 g/mol
VQ-042159
1-Methyl-5-(4-methylbenzoyl)-1H-pyrrol-2-yl Propionate
- CAS
- 2514774-72-0
- Formula
- C16H17NO3
- MW
- 271.3 g/mol
VQ-034321
1-Methylpiperidin-4-yl 2-chloro-2,2-diphenylacetate hydrochloride
- CAS
- 54556-99-9
- Formula
- C20H23Cl2NO2
- MW
- 380.3 g/mol
VQ-041729
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