Used in bioconjugation and drug delivery systems, it serves as a linker to attach bioactive molecules to peptides, proteins, or other carriers. Its PEG (polyethylene glycol) spacer enhances solubility and reduces immunogenicity, while the T-Boc group provides protection for the aminooxy functionality during synthesis. This compound is particularly valuable in creating antibody-drug conjugates (ADCs) and targeted therapies, enabling precise delivery of drugs to specific cells or tissues. Additionally, it is employed in click chemistry reactions for labeling and imaging applications in biomedical research.