This chemical is primarily utilized in the field of organic synthesis, particularly in the development of complex molecular structures. It serves as a key intermediate in the preparation of polyethylene glycol (PEG) derivatives, which are widely used in bioconjugation and drug delivery systems. The compound's structure, featuring multiple ethylene oxide units, allows for the creation of water-soluble and biocompatible materials. It is often employed in the modification of proteins, peptides, and other biomolecules to enhance their stability, solubility, and pharmacokinetic properties. Additionally, its tert-butyl ester group provides a protective function during synthetic processes, enabling selective deprotection in multi-step reactions. This chemical is also relevant in the synthesis of surfactants and polymers, where its unique properties contribute to the development of advanced materials with tailored functionalities.