Used as a reactive intermediate in the synthesis of vinyl sulfone-based dyes, particularly in textile dyeing where it forms covalent bonds with cellulose fibers for improved color fastness. Commonly employed in the production of reactive dyes for cotton and other natural fibers. Also utilized in crosslinking agents for polymers and in the development of functional coatings and adhesives. Its vinyl sulfone group enables Michael addition reactions, making it valuable in bioconjugation and pharmaceutical research for modifying proteins and biomolecules.