O-(2-Carboxyethyl)-O′-[2-(Fmoc-amino)-ethyl]heptacosaethylene glycol

O-(2-Carboxyethyl)-O′-[2-(Fmoc-amino)-ethyl]heptacosaethylene glycol is a PEG-based compound engineered for precise bioconjugation and peptide synthesis applications. The presence of the 2-carboxyethyl and 2-(Fmoc-amino)-ethyl groups offers reactive functionalities necessary for linking peptides and proteins to polyethylene glycol (PEG) chains. This pegylation process extends the solubility and stability of proteins while minimizing immunogenicity. The heptacosaethylene glycol backbone, comprising 27 ethylene glycol units, provides a highly hydrophilic, flexible structure that can significantly enhance the water solubility of conjugated biomolecules. The Fmoc group (9-fluorenylmethoxycarbonyl) is a protective group commonly used in solid-phase peptide synthesis. This allows for the stepwise synthesis of complex peptides while preventing undesired side reactions. The carboxyethyl group is reactive under mild conditions and can facilitate amide bond formation, making this compound ideal for coupling with various amine-containing biomolecules. In research, O-(2-Carboxyethyl)-O′-[2-(Fmoc-amino)-ethyl]heptacosaethylene glycol is utilized for surface modification studies, enabling the controlled functionalization of surfaces with peptides or proteins. This compound′s high solubility and non-fouling properties have made it a valuable tool in creating biofunctional surfaces for assays, diagnostic devices, and biomolecular interaction studies. Its unique chemistry provides a versatile scaffold to explore the influence of pegylation on biomolecular stability and interactions, aiding the development of novel bioconjugates.