This compound is widely used in bioconjugation and drug delivery systems due to its unique properties. The Boc (tert-butoxycarbonyl) group acts as a protective group for amines, allowing selective reactions in complex organic syntheses. The PEG (polyethylene glycol) spacer enhances solubility, reduces immunogenicity, and improves stability of the conjugated molecules, making it ideal for modifying peptides, proteins, and other biomolecules. The terminal amine group enables further functionalization, such as coupling with carboxylic acids or other reactive groups, facilitating the creation of targeted drug delivery systems or diagnostic agents. Its application is particularly valuable in the development of biotherapeutics, where controlled release and targeted action are critical. Additionally, it is utilized in the synthesis of linkers for antibody-drug conjugates (ADCs), enhancing the efficacy and specificity of cancer treatments.