Cyclopropanesulfonyl chloride is primarily used as a key intermediate in organic synthesis, particularly in the pharmaceutical industry. It plays a crucial role in the production of various bioactive compounds, including potential drug candidates. Its sulfonyl chloride group allows it to act as a versatile reagent for introducing the cyclopropane moiety into larger molecules, which is often essential for modifying the biological activity or stability of pharmaceuticals. Additionally, it is utilized in the development of agrochemicals, where its structural properties contribute to the creation of effective pesticides or herbicides. The compound’s reactivity also makes it valuable in material science for synthesizing specialized polymers or coatings with unique properties.