PKA-IN-1 is primarily used in biochemical research as a potent and selective inhibitor of protein kinase A (PKA). It is employed to study the role of PKA in various cellular processes, including signal transduction, metabolism, and gene expression. Researchers utilize this compound to investigate the effects of PKA inhibition on cell proliferation, differentiation, and apoptosis, particularly in cancer studies. Additionally, PKA-IN-1 is valuable in exploring the involvement of PKA in neurological disorders, cardiovascular diseases, and other conditions where PKA signaling is implicated. Its application helps in understanding the molecular mechanisms underlying these diseases and in the development of potential therapeutic strategies.