Used as a key intermediate in the synthesis of pharmaceuticals, particularly in the development of antiviral and anticancer agents. Its structure supports modification for nucleoside analogs, which can interfere with viral replication or DNA synthesis in cancer cells. Also employed in agrochemical research for designing bioactive molecules. Commonly utilized in medicinal chemistry for structure-activity relationship (SAR) studies due to its halogenated pyrimidine core, enabling further functionalization through cross-coupling reactions.