Methoxypolyethylene glycol is widely used in the pharmaceutical industry as a polymer for drug delivery systems. It is commonly employed to modify proteins and peptides, enhancing their solubility, stability, and circulation time in the body. This chemical is a key component in the production of PEGylated drugs, which are designed to reduce immunogenicity and improve therapeutic efficacy. Additionally, it is utilized in the formulation of hydrogels and coatings for medical devices, providing biocompatibility and lubrication. In the cosmetic industry, it serves as a moisturizing agent and emulsifier in skincare products. Its applications also extend to industrial processes, where it acts as a surfactant and dispersant in various formulations.