API
IMPURITY
CHEMICAL NAME
STRUCTURE
2
Felodipine

EP Impurity A

ethyl methyl 4-(2,3-dichlorophenyl)-2,6-dimethylpyridine-3,5-dicarboxylate Felodipine-EP-Impurity-A
Felodipine

EP Impurity B

dimethyl 4-(2,3-dichlorophenyl)-2,6-dimethyl-1,4-dihydropyridine-3,5-dicarboxylate Felodipine-EP-Impurity-B
Felodipine

EP Impurity C

diethyl 4-(2,3-dichlorophenyl)-2,6-dimethyl-1,4-dihydropyridine-3,5-dicarboxylate Felodipine-EP-Impurity-C