This chemical is widely used in the field of bioconjugation and drug delivery systems. Its polyethylene glycol (PEG) chains enhance solubility and stability, making it valuable for modifying peptides, proteins, and other biomolecules. It is particularly useful in creating PEGylated therapeutics, which improve the pharmacokinetics and reduce immunogenicity of drugs. Additionally, it serves as a linker in the synthesis of targeted drug delivery systems, enabling precise attachment of active pharmaceutical ingredients to carriers. Its protective Boc group allows for controlled reactions in multi-step synthetic processes, ensuring selective modifications in complex molecular structures.