Used as a key intermediate in the synthesis of pharmaceuticals, particularly in the development of kinase inhibitors and other biologically active compounds. Its halogenated pyrimidine structure allows for selective cross-coupling reactions, making it valuable in medicinal chemistry for building complex drug molecules. Commonly employed in the preparation of antiviral, anticancer, and anti-inflammatory agents due to its reactivity and ability to mimic natural nucleobases. Also utilized in agrochemical research for designing novel pesticides and herbicides.