Primarily used in organic synthesis as a reagent for introducing the anthracene moiety into various compounds. It is particularly valuable in the preparation of fluorescent dyes and probes due to the anthracene group's strong fluorescence properties. These dyes are widely applied in biological imaging and diagnostic assays to track and visualize cellular processes. Additionally, it serves as a key intermediate in the development of photoresponsive materials, which are essential in photolithography and optoelectronic devices. Its sulfonyl chloride group allows for facile conjugation with amines and alcohols, making it useful in polymer chemistry for creating functionalized materials with tailored properties.