Amlodipine EP Impurity C Maleate Catalogue A236733 CAS 721958-74-3 (free base) M.W 467.95 116.07 M.F C22H30ClN3O6. C4H4O4 Specifications FAQs 3-ethyl 5-methyl 2,6-bis((2-aminoethoxy)methyl)-4-(2-chlorophenyl)-1,4-dihydropyridine-3,5-dicarboxylat