Fluoromethylsulfonylbenzene is primarily used in organic synthesis as a versatile reagent. It is particularly valuable in the preparation of sulfonamides, which are important in the development of pharmaceuticals and agrochemicals. The compound is also employed in the synthesis of complex organic molecules, where its sulfonyl group acts as a good leaving group, facilitating various substitution reactions. Additionally, it finds application in the modification of polymers and materials, enhancing their properties for specific industrial uses. Its reactivity and stability make it a useful intermediate in research and development processes across multiple chemical industries.