Used primarily as a fluorescent labeling reagent in HPLC (High-Performance Liquid Chromatography) for the detection and analysis of various compounds. It reacts selectively with functional groups like amines, alcohols, and thiols, enabling the labeling of target molecules for enhanced sensitivity and detection. Commonly applied in pharmaceutical and biochemical research to analyze complex mixtures, track metabolic pathways, or quantify low-concentration analytes. Its fluorescence properties make it suitable for trace analysis and studies requiring high precision.