This chemical is primarily utilized in the field of biotechnology and pharmaceuticals due to its unique properties as a polyethylene glycol (PEG) derivative. It is often employed as a linker or spacer molecule in drug delivery systems, where it helps improve the solubility, stability, and bioavailability of therapeutic compounds. Its long PEG chain allows for enhanced circulation time in the bloodstream, making it valuable in the development of targeted therapies, such as antibody-drug conjugates. Additionally, it is used in the modification of proteins and peptides to reduce immunogenicity and increase their half-life in vivo. The compound is also applied in the synthesis of hydrogels and other biomaterials for tissue engineering and regenerative medicine. Its biocompatibility and water-soluble nature make it a versatile tool in various biomedical applications.