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 form stable heterocyclic structures that interact with biological targets. Commonly employed in the preparation of antiviral and anticancer agents, especially those targeting tyrosine kinase pathways. Its chloro-substituted pyrimidine ring allows for further functionalization, enabling the creation of diverse compound libraries for drug discovery. Also utilized in agrochemical research for designing novel pesticides with improved selectivity and efficacy.