Clevidipine butyrate Impurity 7 Catalogue D155227 CAS 175688-79-6 M.W 448.30 M.F C21H19Cl2N3O4 Specifications FAQs bis(2-cyanoethyl) 4-(2,3-dichlorophenyl)-2,6-dimethyl-1,4-dihydropyridine-3,5-dicarboxylate
