Used in biochemical research as a derivatizing agent to detect and quantify gamma-aminobutyric acid (GABA) due to its ability to form stable, chromophoric derivatives that are easily analyzed by spectrophotometry or HPLC. Enhances detection sensitivity in assays targeting neurotransmitters. Also employed in studies of enzyme activity, particularly in monitoring GABA-transaminase and related metabolic pathways. Its distinct color change upon reaction supports visual and instrumental tracking in analytical procedures.