PHI-27, derived from rats, is primarily utilized in research focused on understanding peptide interactions and their biological roles. It is often studied for its potential effects on cellular processes and signaling pathways, particularly in neuroscience and endocrinology. Researchers investigate its role in modulating receptor activity, which can provide insights into the development of therapeutic agents for neurological disorders. Additionally, PHI-27 is used in studies exploring its impact on hormone regulation and its potential applications in treating metabolic or hormonal imbalances. Its use in experimental models helps to elucidate its mechanism of action and potential therapeutic benefits.