Used as an intermediate in the synthesis of pharmaceutical compounds, particularly in the development of kinase inhibitors for cancer treatment. Its structure allows for selective modification, making it valuable in creating targeted therapies. Commonly employed in research settings to build more complex quinazoline-based molecules with biological activity. Also utilized in the preparation of tyrosine kinase inhibitors, which play a role in blocking signaling pathways involved in tumor growth. Its reactivity supports coupling reactions in medicinal chemistry, enabling the introduction of various functional groups for drug optimization.