Used as a selective activator of protein kinase A (PKA) in cellular signaling research. It mimics the action of endogenous cAMP, making it valuable for studying pathways involved in metabolism, gene expression, and cell proliferation. Due to its resistance to phosphodiesterase degradation, it provides prolonged PKA activation, which is useful in experiments requiring sustained cAMP signaling. Commonly applied in studies of neuronal function, hormone action, and cardiac cell regulation. Its cell permeability allows for direct use in cell culture systems to investigate intracellular responses without receptor mediation.