Used as a derivatizing agent in analytical chemistry, particularly in the detection and quantification of carbonyl compounds such as aldehydes and ketones. It reacts with carbonyl groups to form hydrazone derivatives, which are more stable and detectable, especially in techniques like HPLC or GC-MS. Commonly applied in the analysis of oxidized lipids, food degradation products, and environmental pollutants. Also utilized in biochemical assays to trap reactive carbonyl species in biological samples, aiding in the study of oxidative stress and metabolic disorders.