Used in neuroscience research to study neurotensin receptor subtypes, particularly NTS1 and NTS2. Helps investigate pain modulation, dopamine regulation, and potential antipsychotic or analgesic drug development. Due to enhanced stability from lysine substitutions, it serves as a valuable tool for in vitro and in vivo binding and functional assays. Also explored for targeted imaging and delivery in cancer research, especially in tumors overexpressing neurotensin receptors.