This compound is widely used in peptide synthesis, particularly in solid-phase peptide synthesis (SPPS). It serves as a protecting group for amino acids, ensuring selective deprotection and preventing unwanted side reactions during the synthesis process. Its hydrophilic polyethylene glycol (PEG) spacer enhances solubility in aqueous solutions, making it useful for synthesizing peptides with improved water solubility. Additionally, it is employed in the development of peptide-based drugs, bioconjugates, and biomaterials, where controlled release and stability are critical. Its application also extends to the study of protein-protein interactions and the design of peptide-based probes for biochemical research.