Methoxypolyethylene glycol amine is widely used in the pharmaceutical industry for drug delivery systems. It is often conjugated to therapeutic proteins and peptides to enhance their solubility, stability, and circulation time in the body, a process known as PEGylation. This modification reduces immunogenicity and improves the pharmacokinetics of the drugs. Additionally, it is employed in the development of hydrogels and biocompatible coatings for medical devices, ensuring better compatibility with biological tissues. In biotechnology, it serves as a linker or spacer molecule in the synthesis of bioconjugates, facilitating the attachment of biomolecules for various research and diagnostic applications. Its versatility also extends to the field of nanotechnology, where it is used to functionalize nanoparticles for targeted drug delivery and imaging.