Used as a key intermediate in the synthesis of quinazoline-based pharmaceutical compounds, particularly in the development of kinase inhibitors for cancer treatment. Its halogen substitution pattern allows for selective cross-coupling reactions, enabling the introduction of functional groups needed for biological activity. Commonly employed in research settings to design potent and selective drug candidates targeting epidermal growth factor receptor (EGFR) and other tyrosine kinases. Also utilized in agrochemical research for developing novel pesticides with improved efficacy and selectivity.