Used in pharmaceutical research as a key intermediate in the synthesis of selective kinase inhibitors, particularly in the development of targeted cancer therapies. Its rigid polycyclic structure enhances binding affinity to specific enzyme active sites, improving inhibitor potency. Also employed in the design of fluorescent probes for studying protein-ligand interactions due to its favorable photophysical properties. Shows promise in medicinal chemistry for optimizing drug candidates with improved metabolic stability and bioavailability.