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
4-(Benzyloxycarbonylamino)-2-fluorophenylboronicacid
- CAS
- 874290-59-2
- Formula
- C14H13BFNO4
- MW
- 289.07 g/mol
VQ-040341
![4-(Bromomethyl)-[1,1'-biphenyl]-2-carbonitrile chemical structure](/media/structures/LQPCAPMUDDPGHJ-UHFFFAOYSA-N.svg)
4-(Bromomethyl)-2-methyl-1-(trifluoromethoxy)benzene
- CAS
- 1261679-35-9
- Formula
- C9H8BrF3O
- MW
- 269.06 g/mol
VQ-034887
4-(Chloromethyl)-2-((dimethylamino)methyl)-4,5-dihydrothiazol-4-ol
- CAS
- 92759-37-0
- Formula
- C7H13ClN2OS
- MW
- 208.71 g/mol
VQ-026940
4-(Cyclohexanecarbonyl)-1-phenethyl-3,4-dihydropyrazin-2(1H)-one
- CAS
- 94494-35-6
- Formula
- C19H24N2O2
- MW
- 312.4 g/mol
VQ-033290
4-(Cyclopropylcarbonyl)-α,α-dimethylbenzeneacetic Acid
- CAS
- 162096-54-0
- Formula
- C14H16O3
- MW
- 232.27 g/mol
VQ-025771
4-(Cyclopropylcarbonyl)-α,α-dimethylbenzeneacetic Acid Methyl Ester
- CAS
- 880088-78-8
- Formula
- C15H18O3
- MW
- 246.3 g/mol
VQ-025772
4-(Cyclopropylmethoxy)-3-(difluoromethoxy) Roflumilast
- CAS
- 162401-43-6
- Formula
- C17H14Cl2F2N2O3
- MW
- 403.2 g/mol
VQ-033629
4-(Dichloromethyl)-N-(4-methyl-3-((4-(pyridin-3-yl)pyrimidin-2-yl)amino)phenyl)benzamide
- CAS
- 581076-66-6
- Formula
- C24H19Cl2N5O
- MW
- 464.3 g/mol
VQ-048656
4-(Ethoxycarbonyl)-3,5-dimethyl-1H-pyrrole-2-carboxylic acid
- CAS
- 5442-91-1
- Formula
- C10H13NO4
- MW
- 211.21 g/mol
VQ-044113
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