Used as a fluorescent labeling reagent in biochemical and analytical applications, particularly for the detection and quantification of amino acids and peptides in high-performance liquid chromatography (HPLC). Its high sensitivity and stability upon derivatization make it suitable for trace analysis in biological samples. Also employed in the development of fluorescent probes for monitoring enzymatic activity and protein interactions. The compound's strong fluorescence after reaction with primary amines allows for low-detection limits in automated systems.