WAY-638833 is primarily used in scientific research as a potent and selective antagonist for the 5-HT6 (serotonin 6) receptor. Its main application lies in neuropharmacological studies, particularly in investigating cognitive functions, memory, and learning processes. Due to the involvement of 5-HT6 receptors in central nervous system disorders, WAY-638833 serves as a valuable tool compound in exploring potential treatments for conditions such as Alzheimer's disease, schizophrenia, and other cognitive impairments. It helps researchers understand receptor mechanisms and evaluate the effects of receptor blockade in animal models. The compound is not used clinically but supports the development and validation of novel therapeutic agents targeting serotonin pathways.