Used as a key intermediate in the synthesis of pharmaceutical compounds, particularly in the development of kinase inhibitors and antiviral agents. Its structure supports the formation of biologically active molecules by serving as a building block in heterocyclic chemistry. Commonly employed in medicinal chemistry for modifying pyrimidine-based scaffolds to enhance binding affinity and selectivity in drug candidates. Also utilized in the preparation of analogs for structure-activity relationship (SAR) studies.