Amino-PEG11-amine is widely used in bioconjugation and drug delivery systems due to its long polyethylene glycol (PEG) chain, which enhances solubility and reduces immunogenicity. It serves as a linker molecule in the development of antibody-drug conjugates (ADCs), enabling the attachment of therapeutic agents to targeting antibodies. This chemical is also employed in surface modification of nanoparticles, improving their stability and biocompatibility for biomedical applications. Additionally, it is utilized in the synthesis of PEGylated peptides and proteins, prolonging their circulation time in the body. Its dual amine groups allow for versatile functionalization, making it valuable in creating crosslinked hydrogels for tissue engineering and controlled drug release.