Tetrabromo-o-sulfobenzoic anhydride serves as a multifunctional dye, integral to biological experiments by allowing researchers to observe and analyze cell structures, track biomolecules, evaluate functions, and detect various elements. Its use extends from basic scientific research to clinical diagnostics. Additionally, dyes play a significant role in traditional textile dyeing and are emerging in functional textile processing, food pigments, and dye-sensitized solar cells.