CAY10503 is a potent and selective inhibitor of IKKβ (IκB kinase beta), primarily utilized in research settings to study its effects on the NF-κB signaling pathway, particularly those involving inflammation and immune responses. It is often employed in laboratory experiments to investigate the modulation of specific enzymes or receptors, providing insights into potential therapeutic targets for various diseases such as cancer and inflammatory disorders. Researchers use it to explore its impact on cell proliferation, apoptosis, and other biological processes, contributing to the development of novel drug candidates. Its application is largely confined to preclinical studies, where it helps elucidate mechanisms underlying complex physiological and pathological conditions.