Used primarily in pharmacological research, this compound acts as a selective antagonist for dopamine D1 receptors. It is instrumental in studying the role of dopamine D1 receptors in various neurological processes, including cognition, motor control, and reward mechanisms. Researchers utilize it to explore potential treatments for psychiatric and neurological disorders such as schizophrenia, Parkinson's disease, and addiction. Its application extends to understanding receptor binding and signaling pathways, aiding in the development of targeted therapies.