Used as an intermediate in organic synthesis, particularly in the preparation of sulfonated aromatic compounds for dyes and pharmaceuticals. Acts as a source of the 4-acetylbenzenesulfonyl group in sulfonylation reactions. Employed in the development of photoactive compounds due to the presence of the acetyl and sulfinate functionalities, which can participate in light-induced transformations. Also utilized in the synthesis of functional polymers and surfactants where controlled polarity and reactivity are required.