CBP/p300-IN-1 is primarily utilized in biochemical research to study the roles of the CBP and p300 proteins, which are crucial transcriptional coactivators involved in various cellular processes. This compound is used as an inhibitor to investigate the pathways and mechanisms regulated by these proteins, particularly in the context of cancer, inflammation, and other diseases. Researchers employ it to understand how modulating CBP/p300 activity affects gene expression, cell differentiation, and tumor growth. Its application also extends to drug discovery, where it serves as a tool to identify potential therapeutic targets for diseases linked to dysregulated transcriptional activity.