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 a variety of functionalization reactions, such as nucleophilic substitution and addition reactions. Commonly employed in cycloaddition reactions to build complex cyclic structures. Also utilized in the preparation of specialty polymers and as a building block in the synthesis of bioactive molecules. Its strained ring system enhances reactivity, making it valuable in research and development of new chemical entities.