SHAKIR , K.; MOHAMMED , D. Spectrophotometric Determination of Doxycycline Hydrochloride in its pure form and its pharmaceutical preparations using reagent 2,4,6 - tribromo-anline by the Azo coupling reaction. Journal of Wahj Al-Ulom for Pure Sciences, [S. l.], v. 1, n. 4, 2025. DOI: 10.33899/jwups.v1i4.28985. Disponível em: https://edusj.uomosul.edu.iq/index.php/jwups/article/view/28985. Acesso em: 9 sep. 2025.