Used as a potent and selective antagonist for the neuropeptide Y (NPY) Y1 receptor in research settings. It helps in studying the role of NPY in biological processes such as appetite regulation, anxiety, and cardiovascular function. Commonly applied in pharmacological assays to block Y1 receptor activity, aiding in the development of drugs targeting obesity, hypertension, and mood disorders. Due to its high selectivity, it is preferred in receptor binding and functional studies to differentiate Y1-mediated responses from other NPY receptor subtypes.