m-PEG4-C6-phosphonic acid ethyl ester

• CAT Number: I016510
• CAS Number: 2028281-89-0
• Molecular Formula: C19H41O7P
• Molecular Weight: 412.50
• Purity: ≥95%
• Synonyms: 1-diethoxyphosphoryl-8-[2-[2-(2-methoxyethoxy)ethoxy]ethoxy]octane
• InChI: InChI=1S/C19H41O7P/c1-4-25-27(20,26-5-2)19-11-9-7-6-8-10-12-22-15-16-24-18-17-23-14-13-21-3/h4-19H2,1-3H3
• InChIKey: CNDORYGJXMHDBX-UHFFFAOYSA-N
• SMILES: CCOP(=O)(CCCCCCCCOCCOCCOCCOC)OCC

m-PEG4-C6-phosphonic acid ethyl ester(CAT: I016510) is a monofunctional polyethylene glycol derivative featuring a four-unit PEG spacer, a hydrophobic six-carbon linker, and a terminal phosphonic acid ethyl ester group. The PEG4 chain imparts hydrophilicity, solubility, and flexibility, while the C6 alkyl segment provides additional spacing and structural versatility. The phosphonic acid ester moiety serves as a protected handle, enabling later hydrolysis to yield a reactive phosphonic acid for strong coordination with metal oxides or other surfaces. This reagent is valuable in surface modification, nanomaterial functionalization, and biomedical applications, offering enhanced stability, reduced nonspecific adsorption, and tailored surface interactions.