“A Critical Review on Bioanalytical Methods Impurity Profiling, Degradation Study of Empagliflozin and Linagliptin ”, Journal of Pharmaceutical Negative Results, pp. 3831–3841, Dec. 2022, Accessed: Jun. 13, 2026. [Online]. Available: https://www.pnrjournal.com/index.php/home/article/view/5598