A-205 is a multifunctional dye, crucial in biological experiments for observing and analyzing cell structures, tracking biomolecules, evaluating cell functions, distinguishing cell types, detecting biomolecules, studying tissue pathology, and monitoring microorganisms. Its applications range from basic scientific research to clinical diagnostics. Dyes are also extensively used in traditional fields such as textile dyeing and in emerging fields like functional textile processing, food pigments, and dye-sensitized solar cells.