Used as an intermediate in the synthesis of pharmaceutical compounds, particularly in the development of kinase inhibitors and other biologically active molecules. Its structure allows for selective substitution reactions, making it valuable in medicinal chemistry for creating targeted drug candidates. Commonly employed in research settings to build quinazoline-based derivatives with potential anticancer, antiviral, or anti-inflammatory properties. Also utilized in agrochemical research for developing novel pesticides due to its reactivity and stability in various chemical transformations.