Used primarily as an intermediate in organic synthesis, especially in the production of pharmaceuticals and agrochemicals. Its reactive chlorine atom and double bond allow for various substitution and elimination reactions, making it valuable in constructing carbon chains and introducing functional groups. Commonly employed in the preparation of beta-chloro ketones and other halogenated derivatives. Also utilized in polymer chemistry as a monomer or cross-linking agent due to its unsaturated structure. Its (Z)-configuration offers stereoselective advantages in certain synthetic pathways.