Used in research to study the melanocortin system, particularly as a competitive antagonist at melanocortin receptors. Helps investigate the role of ACTH fragments in modulating pigmentation, adrenal function, and neurobehavioral processes. Employed in experimental models to block specific melanocortin receptor subtypes, aiding in the understanding of receptor function and signaling pathways. Also utilized in studies exploring inflammation, energy homeostasis, and central nervous system regulation.