Used in research settings as a potent and selective inhibitor of the enzyme dipeptidyl peptidase-4 (DPP-4), making it a candidate for studying glucose metabolism and insulin regulation. Its high selectivity allows for precise modulation of DPP-4 activity in cellular and animal models, supporting investigations into type 2 diabetes and related metabolic disorders. Also utilized in pharmacokinetic and pharmacodynamic studies to evaluate duration of action and tissue distribution of DPP-4 inhibitors. Not approved for clinical use but serves as a tool compound in drug discovery.