Used primarily in scientific research to investigate the role of orexin receptors in regulating sleep-wake cycles, appetite, and addiction. Acts as a selective antagonist for the orexin OX1 receptor, making it a valuable tool in studying disorders such as narcolepsy, insomnia, and drug dependence. Frequently applied in preclinical studies to understand the neurochemical pathways involved in arousal and reward mechanisms. Not intended for clinical or therapeutic use in humans.