Development of Colorimetric Method for the Quantitative Analysis of Amlodipine Besylate in Dosage Form Using 4-Dimethyleaminobenzaldehyde as Derivatizing Reagent. Pakistan Journal of Analytical & Environmental Chemistry, Pakistan, v. 21, n. 1, p. 27 – 33, 2020. DOI: 10.21743/pjaec/2020.06.04. Disponível em: https://pjaec.pk/index.php/pjaec/article/view/119. Acesso em: 6 jul. 2025.