WAY-325909 is primarily used in neuroscience research as a potent and selective agonist for the 5-HT2C receptor subtype. Its main application lies in studying the role of serotonin signaling in behavioral and physiological processes, particularly those related to mood regulation, appetite control, and reward pathways. Due to its selectivity, it is a valuable tool for investigating the therapeutic potential of 5-HT2C activation in conditions such as depression, anxiety, obesity, and substance use disorders. It has also been employed in preclinical studies to differentiate 5-HT2C-mediated effects from those of other serotonin receptors, aiding in the development of more targeted psychiatric medications.