Development and validation of analytical method by spectrophotometry UV-Vis for quantification of flavonoids in leaves of Senna occidentalis Link. Research, Society and Development, [S. l.], v. 11, n. 1, p. e14411118584, 2022. DOI: 10.33448/rsd-v11i1.18584. Disponível em: https://rsdjournal.org/rsd/article/view/18584. Acesso em: 5 dec. 2025.