Used as an intermediate in organic synthesis, particularly in the preparation of pharmaceuticals and agrochemicals. It serves as a sulfone-based building block in cross-coupling reactions and can act as an alkylating agent due to the reactive chloroethyl group. Its electron-withdrawing sulfone functionality makes it useful in Michael addition reactions and in the construction of complex sulfone-containing molecules. Also employed in the development of functional polymers and specialty materials where thermal and oxidative stability are required.