Used primarily in research settings as a selective antagonist for dopamine D4 receptors, this compound aids in studying neurological pathways associated with psychiatric disorders such as schizophrenia and attention deficit hyperactivity disorder (ADHD). Its high affinity for the D4 receptor subtype makes it a valuable tool in understanding receptor function and in the development of novel therapeutic agents targeting dopaminergic signaling. It is not used clinically but serves as a reference compound in neuropharmacology studies and receptor binding assays.