Used as a derivatization reagent in analytical chemistry, particularly in mass spectrometry. Enhances detection of carbonyl-containing compounds like aldehydes and ketones by forming stable oxime derivatives. Improves sensitivity and selectivity in metabolomics and environmental analysis. Also applied in bioconjugation techniques due to its ability to selectively modify carbonyl groups in biomolecules under mild conditions. Water-soluble nature allows use in aqueous reaction systems, making it suitable for biological samples.