Fmoc-PEG-Amine

Fmoc-PEG-Amine is a heterobifunctional reagent designed for solid-phase peptide synthesis (SPPS), providing Fmoc protection for the amine group while offering a protonated primary amine for further conjugation via amidation or other amine-reactive chemistry. Its key advantages include improved water solubility due to the hydrochloride salt form, tunable spacer length (n), and orthogonal reactivity for sequential modifications, though the Fmoc group requires piperidine deprotection and the protonated amine may need neutralization for efficient nucleophilic reactions.