Widely used as a fluorescent labeling reagent for amines and amino acids in analytical chemistry. Its high sensitivity and selectivity make it ideal for detecting trace amounts of primary and secondary amines in biological samples. Commonly applied in high-performance liquid chromatography (HPLC) to enhance detection limits through fluorescence detection. Also employed in the development of fluorescent probes and sensors due to its strong emission properties in the visible range. Suitable for labeling peptides and proteins in proteomics research, enabling visualization and quantification in complex mixtures. Stable under a variety of reaction conditions, allowing use in both aqueous and organic solvent systems.