Used as a key intermediate in the synthesis of pharmaceuticals, particularly in the development of antiviral and anticancer agents. Its structure allows for easy functionalization, making it valuable in constructing complex heterocyclic compounds. Commonly employed in cross-coupling reactions to introduce pyrimidine moieties into larger bioactive molecules. Also utilized in agrochemical research for developing novel pesticides and herbicides due to its reactivity and stability in various reaction conditions. Additionally, it serves as a monomer in the polymerization to create polymers with unique properties, such as conductive materials or organic electronic materials, owing to its polymerizable vinyl group and the chloro group acting as a directing group for further reactions.