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, making it valuable in constructing active pharmaceutical ingredients (APIs) targeting specific enzyme pathways. Commonly employed in medicinal chemistry for building pyrimidine-based drug candidates due to its reactivity and stability in multi-step synthesis. Also utilized in agrochemical research for developing novel herbicides and plant growth regulators.