Amlodipine Besilate EP Impurity - B (Freebase)

3-Ethyl 5-Methyl (4RS)-4-(2-Chlorophenyl)-6-methyl-2-[[2-[[2-(methylcarbamoyl)benzoyl]amino]ethoxy]methyl]
-1,4-dihydropyridine-3,5-dicarboxylate;3-Ethyl 5-methyl 4-(2-chlorophenyl)-6-methyl-2-[[2-[[2-(methylcarbamoyl)benzoyl]amino]ethoxy]methyl]-1,4- dihydropyridine-3,5-dicarboxylate; 3-Ethyl 5-methyl 4-(2-chlorophenyl)-6-methyl-2-((2-(2-(methylcarbamoyl)benzamido)ethoxy)methyl)-1,4-dihydropyridine-3,5-dicarboxylate; 4-(2-Chlorophenyl)-1,4-dihydro-2-methyl-6-[[2-[[2-[(methylamino)carbonyl]benzoyl]amino]ethoxy]methyl]-5-pyridinedicarboxylic Acid 5-Ethyl 3-Methyl Ester;