RGFP966 is primarily used in research settings to study its effects on histone deacetylase (HDAC) inhibition, particularly HDAC3. It is a selective inhibitor that helps researchers understand the role of HDAC3 in various biological processes, such as gene expression, cellular differentiation, and metabolism. Its application extends to neuroscience, where it is investigated for potential therapeutic effects in neurodegenerative diseases, cognitive disorders, and memory enhancement. Additionally, RGFP966 is explored in cancer research to assess its impact on tumor growth and epigenetic regulation. Its specificity makes it a valuable tool for dissecting HDAC3-related pathways and developing targeted treatments.