m-PEG8-thiol

• CAT Number: I016494
• CAS Number: 651042-83-0
• Molecular Formula: C17H36O8S
• Molecular Weight: 400.53
• Purity: ≥95%
• Synonyms: 2-[2-[2-[2-[2-[2-[2-(2-methoxyethoxy)ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethanethiol
• InChI: InChI=1S/C17H36O8S/c1-18-2-3-19-4-5-20-6-7-21-8-9-22-10-11-23-12-13-24-14-15-25-16-17-26/h26H,2-17H2,1H3
• InChIKey: LWTPDVASPXFETP-UHFFFAOYSA-N
• SMILES: COCCOCCOCCOCCOCCOCCOCCOCCS

m-PEG8-thiol(CAT: I016494) is a monofunctional polyethylene glycol derivative consisting of an eight-unit PEG spacer terminated with a free thiol group. The PEG8 chain imparts excellent hydrophilicity, flexibility, and reduced steric hindrance, ensuring efficient conjugation in biological and material systems. The thiol functionality reacts selectively with gold, maleimide, or other thiol-reactive groups, making it highly suitable for surface coating, bioconjugation, and nanoparticle stabilization. By providing a hydrophilic protective layer, m-PEG8-thiol improves dispersibility, minimizes nonspecific binding, and enhances biocompatibility. This reagent is widely used in drug delivery, diagnostics, biosensing, and material science applications where controlled surface functionalization is essential.