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 medicinal chemistry for constructing pyrimidine-based bioactive molecules. Commonly employed in cross-coupling reactions such as Suzuki-Miyaura and Buchwald-Hartwig aminations to introduce aryl or amino groups, enabling the creation of diverse compound libraries for drug discovery. Also utilized in the preparation of fluorescent probes and agrochemicals due to its reactivity and stability in various transformation processes.