This chemical is primarily used in the field of bioconjugation and drug delivery systems. It serves as a versatile linker molecule, enabling the attachment of bioactive molecules, such as peptides or proteins, to polyethylene glycol (PEG) chains. This enhances the solubility, stability, and bioavailability of the conjugated molecules. The fluorenylmethoxycarbonyl (Fmoc) protecting group allows for selective deprotection, facilitating controlled synthesis in peptide chemistry. Additionally, it is employed in the development of targeted therapeutic agents, where PEGylation improves the pharmacokinetic properties of drugs, reducing immunogenicity and prolonging circulation time in the body. Its application is also notable in the preparation of hydrogels and biomaterials for tissue engineering and regenerative medicine.