Used as an intermediate in organic synthesis, particularly in the development of pharmaceuticals and functional materials. Its brominated structure allows for cross-coupling reactions, making it valuable in constructing complex aromatic systems. Commonly employed in the preparation of conjugated polymers and small-molecule semiconductors for optoelectronic devices such as organic light-emitting diodes (OLEDs) and organic photovoltaics (OPVs). The sulfone group enhances electron-accepting properties, contributing to improved charge transport characteristics in electronic materials.