Amino-PEG36-acid is widely utilized in bioconjugation and drug delivery systems due to its amphiphilic nature and biocompatibility. Its long polyethylene glycol (PEG) chain enhances solubility and stability, making it ideal for modifying peptides, proteins, and nanoparticles. In drug delivery, it improves pharmacokinetics by extending circulation time and reducing immunogenicity. It is also employed in surface functionalization of materials for biomedical applications, such as creating stealth coatings for implants or targeted drug delivery systems. Additionally, its amino group allows for easy attachment to various molecules, enabling the development of tailored bioconjugates for research and therapeutic purposes.