Aminooxy-PEG2-Aminooxy is widely used in bioconjugation and chemical biology for linking molecules through oxime bond formation. Its primary application is in the modification of proteins, peptides, and other biomolecules, enabling the attachment of functional groups or labels for research, diagnostics, and therapeutic purposes. The compound is particularly valuable in creating stable conjugates due to its dual aminooxy groups, which react efficiently with aldehydes or ketones. It is also employed in drug delivery systems to enhance the solubility and stability of therapeutic agents. Additionally, it plays a role in surface functionalization of nanomaterials, facilitating targeted delivery and imaging in biomedical applications.