Used in pharmaceutical research as a key intermediate in the synthesis of kinase inhibitors, particularly for targeting enzymes involved in inflammatory diseases and cancer. Its structure allows selective modification to enhance binding affinity and metabolic stability in drug candidates. Also employed in the development of PET tracers for neuroimaging due to its ability to cross the blood-brain barrier when appropriately functionalized. Commonly utilized in structure-activity relationship (SAR) studies to optimize potency and selectivity in central nervous system-targeted therapeutics.