Used as a key intermediate in the synthesis of pharmaceutical compounds, particularly in the development of kinase inhibitors for cancer treatment. It serves as a building block in medicinal chemistry due to its ability to undergo selective cross-coupling reactions, enabling the introduction of various functional groups. Its structure is favorable for targeting ATP-binding sites in enzymes, making it valuable in the design of antitumor and anti-inflammatory agents. Also employed in research settings to develop new quinazoline-based bioactive molecules with potential antimicrobial and CNS activities.