Used in peptide synthesis, it serves as a protecting group for amines, ensuring selective reactions during the formation of peptide bonds. Its PEG (polyethylene glycol) linker enhances solubility, facilitating easier handling and purification in organic and aqueous environments. Commonly employed in the development of pharmaceuticals, it aids in creating complex peptide structures with improved stability and bioavailability. Additionally, it finds application in bioconjugation, where it acts as a spacer to link biomolecules, enhancing their functionality in drug delivery systems and diagnostic assays.