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 cross-coupling reactions, making it valuable in constructing complex molecules in medicinal chemistry. Commonly employed in Suzuki and Negishi couplings to introduce the pyrimidine core into target compounds. Also utilized in the preparation of bioactive molecules for oncology research due to its ability to mimic nucleotide bases and interact with biological targets.