Used as a key intermediate in the synthesis of pharmaceuticals, particularly in the development of antiviral and anticancer agents. Its reactive chloromethyl group allows for easy attachment to other molecular structures, making it valuable in constructing complex drug molecules. Commonly employed in the preparation of pyrimidine-based derivatives that exhibit biological activity, including kinase inhibitors and nucleoside analogs. Also utilized in agrochemical synthesis for creating novel pesticides and herbicides with improved efficacy. Its versatility in cross-coupling reactions enhances its role in medicinal chemistry and drug discovery research.