Used in the field of analytical chemistry as a derivatizing agent, particularly for amino acids and peptides. It enhances the detection sensitivity in high-performance liquid chromatography (HPLC) by forming fluorescent derivatives. This allows for precise quantification and identification of amino acids in complex biological samples. It is also applied in protein sequencing and peptide mapping, aiding in the structural analysis of proteins. Additionally, it is utilized in research to study post-translational modifications and protein interactions. Its fluorescent properties make it valuable in fluorescence microscopy for labeling and tracking biomolecules within cells.