This chemical is widely used in the field of bioconjugation and drug delivery. It serves as a key intermediate in the synthesis of PEGylated compounds, which are essential for improving the solubility, stability, and bioavailability of therapeutic agents. Its t-butyl ester group provides protection during chemical reactions, allowing for selective modifications in complex molecular structures. Additionally, it is employed in the development of targeted drug delivery systems, where it helps in attaching drugs to carriers like antibodies or nanoparticles. Its application also extends to the creation of prodrugs, where it aids in controlled release mechanisms, ensuring the drug is activated at the desired site.