Development and Validation of HPLC Method for Determination of Quercetin in Hydrogel Transdermal Patches Loaded with Red Onion Peel Extract: doi.org/10.26538/tjnpr/v6i8.8. Tropical Journal of Natural Product Research , [S. l.], v. 6, n. 8, p. 1210–1214, 2022. Disponível em: https://www.tjnpr.org/index.php/home/article/view/1289. Acesso em: 2 jan. 2026.