Amlodipine Impurity C (EP) diamino CAS No. : 721958-74-3Molecular Formula: C22H30ClN3O6Molecular Weight : 467.94Chemical Name : Ethyl methyl 2,6-bis[(2-aminoethoxy)methyl]-4-(2- chlorophenyl)-1,4-dihydropyridine-3,5-dicarboxylate