Used as a key intermediate in the synthesis of polymers and nanomaterials due to its diverse reactive functional groups, such as the alkyne and ethyl PEG, which enhance water solubility, and the t-butyl ester, which provides molecular stability. Additionally, it is employed in surface modification processes of particles to improve targeting efficiency with specific molecules in biomedical and nanotechnology research. Its versatility supports applications in organic synthesis, material science, and pharmaceutical drug delivery systems.