Used primarily in high-performance liquid chromatography (HPLC) for labeling biomolecules, enabling their detection and analysis. It reacts with amino groups in proteins, peptides, and other compounds, forming stable conjugates. The labeled molecules can then be easily identified and quantified during chromatographic separation. This reagent is particularly valuable in proteomics and biochemical research for studying protein interactions, modifications, and functions. Its application ensures precise and sensitive detection of target molecules in complex biological samples.