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 capillary electrophoresis. Commonly applied in pharmaceutical quality control, clinical diagnostics, and research laboratories for monitoring biogenic amines and assessing protein content in biological samples. Also utilized in the development of rapid test kits for amines in environmental and food samples due to its quick reaction and visible fluorescence output.