CGP 65015 is primarily utilized in research settings, particularly in the field of neuroscience and pharmacology. It serves as a selective antagonist for certain serotonin receptors, making it a valuable tool for studying the role of these receptors in various physiological and pathological processes. Researchers employ it to investigate its effects on mood regulation, anxiety, and depression, as well as its potential interactions with other neurotransmitter systems. Additionally, CGP 65015 is used in preclinical studies to explore its therapeutic potential in treating psychiatric disorders, offering insights into the development of novel pharmacological treatments. Its specificity and efficacy in modulating serotonin receptor activity make it a key compound in advancing understanding of brain function and behavior.