Used as a key intermediate in the synthesis of pharmaceuticals, particularly in the development of kinase inhibitors and antiviral agents. Its structure allows for selective functionalization, making it valuable in medicinal chemistry for constructing complex heterocyclic systems. Commonly employed in cross-coupling reactions such as Suzuki or Buchwald-Hartwig to introduce pyrimidine-based scaffolds into drug candidates. Also utilized in agrochemical research for designing bioactive molecules with improved metabolic stability.