Used as an 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 reactive halogen sites, allowing for selective cross-coupling reactions such as Suzuki or Buchwald-Hartwig aminations. Commonly employed in research settings to design and optimize bioactive molecules targeting tyrosine kinase pathways. Also explored in agrochemical research for developing novel pesticidal agents. Its structure supports the creation of diverse quinazoline derivatives with potential antitumor, anti-inflammatory, and antimicrobial activities.