Used as a key reagent in the synthesis of fluorescent dyes, particularly for labeling proteins and peptides in biochemical research. It is also employed in the development of high-performance liquid chromatography (HPLC) methods for detecting and quantifying biomolecules. The compound's sulfopropyl and dimethoxyaniline groups enhance water solubility and fluorescence properties, making it suitable for sensitive analytical applications. Additionally, it finds use in the preparation of crosslinking agents for modifying polymers and improving their functional characteristics in material science.