SUBTAENG, S.; KRUATIAN, T.; JITPREEDA, P.; WANITSUWAN, W. Method validation for determination of mitragynine in Kratom leaf extract by high performance liquid chromatography. Bulletin of Applied Sciences, Bangkok, Thailand, v. 12, n. 2, p. 10–22, 2023. DOI: 10.60136/bas.v12.2023.621. Disponível em: https://ph03.tci-thaijo.org/index.php/BAS/article/view/621. Acesso em: 2 sep. 2026.