Nadeem Arshad, Muhammad, Islam Ullah Khan, Muhammad Zia-Ur-Rehman, and Muhammad Shafiq. “Antioxidant Potential of New Methyl-4-Hydroxy-2H- 1,2-Benzothiazine-3-Carboxylate-1,1-Dioxide Derivatives”. Asian Journal of Chemistry 23, no. 6 (March 5, 2011): 2801–2805. Accessed July 23, 2024. https://asianpubs.org/index.php/ajchem/article/view/10501.