PD318088 is a selective inhibitor of MEK1 and MEK2 kinases, primarily utilized in research settings to study its effects on the MAPK/ERK signaling pathway in cellular processes. It is often employed in laboratory experiments to investigate its potential in modulating enzyme activity and inhibiting cell proliferation, particularly in cancer cells. Researchers use it to explore its impact on biological pathways, providing insights into disease mechanisms or therapeutic targets such as oncology, neurological disorders, and inflammatory conditions. Its application is largely confined to preclinical studies, where it helps in understanding molecular interactions and signaling pathways. This compound is valuable in the development of new pharmacological approaches targeting abnormal cell signaling.