Used in bioconjugation and chemical biology, it serves as a linker to attach molecules like proteins, peptides, or drugs to other entities, enhancing solubility and stability. It is particularly valuable in creating PEGylated compounds, which are widely applied in drug delivery systems to improve pharmacokinetics and reduce immunogenicity. Additionally, it finds use in modifying surfaces for biomedical applications, such as biosensors or targeted therapies. Its aminooxy group enables selective reactions with aldehydes or ketones, making it a versatile tool in research and therapeutic development.