BD140 is primarily used in research and development within the field of neuroscience. It serves as a selective antagonist for the dopamine D3 receptor, making it a valuable tool for studying the role of this receptor in various neurological and psychiatric conditions. Researchers utilize BD140 to investigate its potential effects on behaviors related to addiction, reward processing, and motor control. Its application helps in understanding the underlying mechanisms of disorders such as Parkinson's disease, schizophrenia, and substance abuse. Additionally, BD140 is employed in preclinical studies to explore the development of therapeutic agents targeting the D3 receptor, offering insights into novel treatment strategies.