Aminooxy-PEG2-alcohol is widely used in bioconjugation and chemical biology for linking molecules through oxime bond formation. Its aminooxy group reacts selectively with aldehydes or ketones, making it valuable for modifying proteins, peptides, and other biomolecules. This compound is particularly useful in drug delivery systems, where it helps attach therapeutic agents to targeting molecules or carriers. It also plays a role in surface functionalization of materials for biomedical applications, such as biosensors or tissue engineering scaffolds. Additionally, it is employed in the synthesis of PEGylated compounds to enhance solubility, stability, and biocompatibility of drugs or biomolecules.