Amlodipine EP impurity B

Chemical Name: Methylaminophthaloyl Amlodipine; N-[2-[(Methylamino)carbonyl]benzoyl] Amlodipine; 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; 3-Ethyl 5-Methyl (4RS)-4-(2-Chlorophenyl)-6-methyl-2-[[2-[[2-(methylcarbamoyl)benzoyl]amino]ethoxy]methyl]-1,4-dihydropyridine-3,5-dicarboxylate;

Synonym: 2-amino-4-phenylbutanoic acid