Used as a key intermediate in the synthesis of pharmaceuticals, particularly in the development of kinase inhibitors and antiviral agents. Its structure allows for selective functionalization, especially via nucleophilic substitution at the 2-chloride position, which can be replaced by amino or hydroxyl groups, making it valuable in constructing pyrimidine-based drug candidates. Commonly employed in medicinal chemistry as a building block in targeted therapies, including anticancer and anti-inflammatory compounds. Also utilized in agrochemical research for designing novel pesticides due to its reactivity and stability in coupling reactions.