PKA Inhibitor (5-24), also known as PKI (5-24), is primarily used in research to study the role of protein kinase A (PKA) in cellular signaling pathways. It is a specific and potent inhibitor of PKA, making it valuable for understanding the enzyme's function in various biological processes. Researchers use it to investigate PKA's involvement in cellular responses such as metabolism, gene expression, and cell growth. Additionally, it helps in elucidating the mechanisms of PKA in diseases like cancer, cardiovascular disorders, and neurological conditions. Its application extends to experimental studies where precise control of PKA activity is required to observe its effects on specific cellular functions.