Used in research as a potent and selective serotonin 5-HT1A receptor ligand. Shows high affinity for 5-HT1A receptors, making it valuable in studies related to anxiety, depression, and neuropharmacology. Often employed in radiolabeled form for receptor binding assays and neuroimaging to map serotonin receptor distribution in the brain. Also explored in the development of central nervous system-targeted therapeutics due to its ability to cross the blood-brain barrier effectively.