Used as a key intermediate in the synthesis of pharmaceuticals, particularly in the development of kinase inhibitors and antiviral agents. Its halogenated pyrimidine structure allows for selective cross-coupling reactions, making it valuable in medicinal chemistry for building complex drug molecules. Commonly employed in Suzuki and Buchwald-Hartwig reactions to introduce aryl or amino groups. Also utilized in agrochemical research for designing novel pesticides due to its ability to enhance bioactivity and metabolic stability in active ingredients.