Used primarily as a linker or spacer in solid-phase peptide synthesis, this compound enables the attachment of growing peptide chains to resin supports through its benzyl ester group. The fluorenylmethyloxycarbonyl (Fmoc) moiety provides orthogonal protection for the amine group, allowing selective deprotection under mild basic conditions without disrupting the peptide-resin linkage. Its structure incorporates flexible polyether segments with amide and ester functionalities, enhancing solubility in common organic solvents and improving coupling efficiency. This bifunctional character makes it valuable in the synthesis of peptide libraries, bioconjugates, and structured biomolecules where controlled assembly and cleavage are required.