Used as a derivatization reagent in analytical chemistry, particularly in mass spectrometry and HPLC, to detect and quantify carbonyl-containing compounds such as aldehydes and ketones. Its aminooxy group reacts selectively with carbonyl groups to form stable oxime derivatives, enhancing detection sensitivity and compound stability. Commonly applied in metabolomics and biochemical research for profiling reactive carbonyl species in biological samples. Also utilized in bioconjugation techniques for modifying biomolecules and in the synthesis of pharmaceutical intermediates where selective functional group protection or labeling is required.