Used as a hydrophilic linker in solid-phase peptide synthesis and bioconjugation, enabling the attachment of peptides or proteins to polyethylene glycol (PEG)-like spacers. Its hydrophilic nature improves solubility of conjugated compounds in aqueous media, making it valuable in the development of pharmaceuticals, diagnostics, and PEGylated biomolecules. Commonly employed in creating cleavable linkers for drug delivery systems and in the preparation of functionalized surfaces for biosensors and microarrays.