Methoxypolyethylene glycol amine is widely used in the pharmaceutical industry for the modification of proteins and peptides, enhancing their solubility and stability in biological systems. It is commonly applied in the development of long-acting therapeutic agents, such as PEGylated drugs, which have prolonged circulation times in the body. This chemical is also utilized in the creation of bioconjugates, improving the delivery and efficacy of drugs by targeting specific tissues or cells. Additionally, it plays a role in nanotechnology, where it is used to functionalize nanoparticles for biomedical applications, including drug delivery systems and diagnostic imaging. In material science, it serves as a surface modifier to improve the biocompatibility of various biomaterials.