Synthesis, characterization and development of validated RP-HPLC method for the estimation of process-related impurity diethyl 4-(3-chlorophenyl)-2, 6-dimethyl-1, 4-dihydropyridine-3, 5-dicarboxylate from amlodipine bulk and formulation. International Journal of Pharmaceutical Chemistry, [S. l.], v. 5, n. 5, p. 172–180, 2015. DOI: 10.7439/ijpc.v5i5.1984. Disponível em: https://ssjournals.co.in/index.php/ijpc/article/view/1984. Acesso em: 12 mar. 2026.