Abstract
Introduction: Saxagliptin hydrochloride is an oral hypoglycemic agent used for the treatment of type 2 diabetes mellitus. Saxagliptin is unstable because it undergoes an intra-molecular cyclisation reaction to form a cyclicamidine in both solution and solid states. In pharmaceutical development of saxagliptin it is important to select the excipients which are compatible and help to minimize the formation of cyclicamidine. In excipient compatibility study for saxagliptin it is essential to identify the formation of cyclicamidine and other related substances. Materials and Methods: In the current work, the method for quantification of saxagliptin, cyclicamidine and its related substances by high performance liquid chromatographic was developed and validated. This method was used as screening technique for assessing the compatibility of saxagliptin with some pharmaceutical excipients. These were evaluated by analyzing the pure saxagliptin and saxagliptin- excipient in physical mixture, which were stored under different conditions at 40°C/75% Relative Humidity (RH) for one month. The method was successfully validated as per ICH guidelines. Results and Conclusion: The results of compatibility study demonstrate the suitability of saxagliptin with Methocel, Polyethylene Glycol (PEG), Opadry Red, Opadry pink, Opadry white, and Opadry Pink.
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