Rp-8-CPT-cAMP is widely used in biochemical and pharmacological research as a selective antagonist of cyclic AMP (cAMP)-dependent protein kinase (PKA). It is particularly valuable in studies aimed at understanding the role of cAMP signaling pathways in cellular processes. By inhibiting PKA, this compound helps researchers dissect the specific contributions of cAMP in various physiological and pathological conditions, such as cell differentiation, metabolism, and gene expression. It is also utilized in neuroscience to investigate the impact of cAMP signaling on neuronal function, synaptic plasticity, and memory formation. Additionally, Rp-8-CPT-cAMP is employed in cardiovascular research to study the regulation of heart muscle contraction and relaxation. Its ability to selectively block cAMP-mediated effects makes it a crucial tool for exploring signal transduction mechanisms and developing targeted therapeutic strategies.