Used in organic synthesis as a versatile building block for creating complex molecules, particularly in the development of pharmaceuticals and agrochemicals. Its ethenesulfonyl group allows for efficient coupling reactions, making it valuable in constructing biologically active compounds. It is also employed in material science for modifying polymers and coatings to enhance their properties, such as adhesion and durability. Additionally, it serves as a key intermediate in the production of specialty chemicals, including dyes and surfactants.