This chemical is primarily used as a fluorescent labeling reagent in biochemical and cellular research. It is particularly valuable for tagging proteins, antibodies, and other biomolecules due to its strong fluorescence properties. The dichlorotriazinyl group allows for efficient covalent binding to amino groups in target molecules, making it a reliable tool for conjugation. It is widely applied in fluorescence microscopy, flow cytometry, and immunoassays to visualize and track biological processes. Additionally, its stability and bright emission make it suitable for sensitive detection methods in diagnostics and molecular biology studies.