Description
General Description
Fmoc-NH-PEG-OH is a versatile heterobifunctional PEG building block designed for orthogonal synthetic strategies and solid-phase peptide synthesis (SPPS). The terminal Fmoc-protected amine remains stable under acidic conditions and can be selectively deprotected under mild basic conditions, typically using 20% piperidine in DMF, to generate a free primary amine (NH2-PEG-OH) for subsequent conjugation.
The terminal hydroxyl group serves as a convenient synthetic handle and can be converted into a wide variety of functional groups, including carboxyl, NHS ester, maleimide, azide, alkyne, aldehyde, acrylate, methacrylate, epoxide, and thiol. This versatility makes Fmoc-NH-PEG-OH an excellent intermediate for the preparation of customized PEG derivatives and multifunctional biomaterials.
The hydrophilic PEG spacer improves water solubility, molecular flexibility, and biocompatibility while reducing steric hindrance and minimizing nonspecific interactions. Fmoc-NH-PEG-OH is widely employed in peptide chemistry, PEG linker synthesis, hydrogel preparation, nanoparticle functionalization, targeted drug delivery, and advanced biomaterials development.
Applications
- Solid-phase peptide synthesis (SPPS)
- Peptide synthesis
- Polymer synthesis
- PEG linker synthesis
- Surface modification
- Nanoparticle functionalization
- Hydrogel synthesis
- Drug delivery systems
- Biomaterials engineering
- Biomedical research
