Used as a key intermediate in the synthesis of pharmaceutical agents, particularly in the development of kinase inhibitors for cancer treatment. Exhibits activity in modulating signaling pathways involved in cell proliferation and apoptosis. Also employed in research settings to design analogs with enhanced bioavailability and target selectivity. Shows potential in central nervous system drug discovery due to its ability to cross the blood-brain barrier. Applied in structure-activity relationship (SAR) studies to optimize quinazoline-based therapeutic compounds.