El-Bagary, Ramzia Ismail, Ehab Farouk Elkady, and Bassam Mahfouz Ayoub. “Development and Validation of a Reversed Phase Liquid Chromatographic Method for the Determination of Three Gliptins and Metformin in the Presence of Metformin Impurity (1-Cyanoguanidine)”. European Journal of Chemistry 4, no. 4 (December 31, 2013): 444–449. Accessed November 14, 2024. https://www.eurjchem.com/index.php/eurjchem/article/view/844.