Widely used as a fluorescent labeling reagent in biochemical and analytical applications. Its high fluorescence quantum yield and photostability make it ideal for tagging amino acids, peptides, and proteins in HPLC and capillary electrophoresis. Commonly employed in the detection and quantification of trace amines and amino groups in environmental and pharmaceutical samples. Also utilized in the synthesis of fluorescent sensors and probes for metal ions and biomolecules due to its electron-rich structure and strong emission properties.