SB 242084 is primarily used in research settings to study the role of serotonin receptors in the brain. It acts as a selective antagonist for the 5-HT2C receptor, helping scientists understand the receptor's function in various physiological and behavioral processes. This compound is particularly valuable in investigating the receptor's involvement in mood regulation, anxiety, and feeding behavior. By blocking the 5-HT2C receptor, SB 242084 allows researchers to explore its potential role in the development of treatments for psychiatric disorders such as depression, schizophrenia, and obesity. Additionally, it aids in examining the receptor's impact on neurotransmitter release and its interaction with other signaling pathways in the central nervous system.