Widely used in analytical chemistry for the detection and quantification of primary amines, especially in amino acid analysis and protein sequencing. It reacts rapidly with primary amines under mild conditions to form highly fluorescent derivatives, enabling sensitive detection in HPLC and other chromatographic methods. Commonly applied in pharmaceutical quality control, clinical diagnostics, and research laboratories for monitoring amino acids in biological fluids. Also used in the food industry to analyze amino acid content and ensure product quality. Its non-derivatizing nature toward secondary amines makes it selective and reliable for specific amine profiling.