Used as a key intermediate in the synthesis of biologically active compounds, particularly in pharmaceutical research. Shows potential in the development of anticancer agents due to its structural similarity to kinase inhibitors. Also employed in the design of compounds targeting central nervous system disorders, leveraging its ability to cross the blood-brain barrier. Applied in medicinal chemistry for structure-activity relationship (SAR) studies within quinazoline derivatives. Additionally, utilized in fluorescence-based assays owing to its inherent photophysical properties, supporting drug discovery and biochemical screening.