Amino-PEG27-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 to attach bioactive molecules, such as drugs, proteins, or peptides, to nanoparticles or other carriers, improving their stability and circulation time in the body. In therapeutic applications, it is utilized to modify biologics, ensuring targeted delivery and controlled release. Additionally, it plays a role in surface functionalization of materials for biomedical devices, enhancing biocompatibility and reducing protein adsorption. Its dual amine groups allow for further chemical modifications, making it versatile in creating tailored bioconjugates for research and clinical applications.