Used primarily in scientific research as a selective antagonist for dopamine D4 receptors, aiding studies on psychiatric and neurological disorders such as schizophrenia and attention deficit hyperactivity disorder (ADHD). Its high selectivity makes it valuable in exploring the role of D4 receptors in cognitive function, mood regulation, and impulse control without significant interaction with other dopamine receptor subtypes. Often employed in preclinical animal models to assess potential therapeutic targets and mechanisms underlying dopaminergic signaling.