Phytochemical Analysis and Eco-Friendly pH Indicator Catharanthus Roseus: A Green Chemistry Approach. International Journal of Pharmaceutical Drug Design, [S. l.], v. 2, n. 6, p. 20–24, 2025. DOI: 10.62896/ijpdd.2.6.03. Disponível em: https://ijpdd.org/index.php/files/article/view/295.. Acesso em: 7 nov. 2025.