Used as a derivatization reagent in analytical chemistry, particularly for the detection and quantification of primary amines and amino acids. It reacts selectively with amino groups to form highly colored or fluorescent derivatives, making it useful in spectrophotometric and fluorometric assays. Commonly applied in high-performance liquid chromatography (HPLC) for enhanced detection sensitivity. Also employed in biochemical research to label peptides and proteins for structural analysis. Its strong chromophoric properties allow for easy visualization and tracking in reaction monitoring and purification processes.