Used in research settings as a potent and selective antagonist for the GPR139 receptor, a G-protein-coupled receptor expressed in the brain. It is primarily employed to study the physiological and pathological roles of GPR139, particularly in relation to neurotransmitter systems involved in mood regulation, addiction, and neurodegenerative disorders. Due to its ability to cross the blood-brain barrier, it is valuable in in vivo studies exploring central nervous system functions. Its high selectivity makes it a useful tool compound for validating GPR139 as a therapeutic target in psychiatric and neurological diseases. Not intended for human use or clinical application.