IQ-R is primarily used in the field of neuroscience and biochemical research as a selective inhibitor of phosphodiesterase 10A (PDE10A). Its application is significant in studying the role of PDE10A in various neurological disorders, such as schizophrenia, Huntington's disease, and Parkinson's disease. Researchers utilize IQ-R to understand the enzyme's function in modulating cyclic nucleotide signaling pathways, which are crucial for neuronal communication and brain function. Additionally, IQ-R aids in the development of potential therapeutic agents targeting PDE10A, offering insights into the treatment of psychiatric and neurodegenerative conditions. Its specificity and potency make it a valuable tool in preclinical studies and drug discovery efforts.