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 by techniques like HPLC or UV-Vis spectroscopy. Commonly applied in environmental and biological sample analysis where sensitive detection of oxidative degradation products is required. Also utilized in the preparation of polymeric materials and cross-linking agents due to its bifunctional hydrazide structure, enabling use in pharmaceutical development and polymer science.