KHALIL , E. .; SULTAN , S. . Spectrophotometric Determination of hiamin Hydrochloride in Pharmaceutical Preparations by Azo-Coupling Reactions with Sulphacetamide Sodium Reagent. Journal of Wahj Al-Ulom for Pure Sciences, [S. l.], v. 1, n. 2, 2025. DOI: 10.33899/jwups.v1i2.21900. Disponível em: https://ojs.uomosul.edu.iq/index.php/jwups/article/view/21900. Acesso em: 2 aug. 2025.