S-acetyl-PEG4-alcohol

• CAT Number: I016485
• CAS Number: 223611-42-5
• Molecular Formula: C10H20O5S
• Molecular Weight: 252.33
• Purity: ≥95%
• Synonyms: S-[2-[2-[2-(2-hydroxyethoxy)ethoxy]ethoxy]ethyl] ethanethioate
• InChI: InChI=1S/C10H20O5S/c1-10(12)16-9-8-15-7-6-14-5-4-13-3-2-11/h11H,2-9H2,1H3
• InChIKey: KKUXNAQDZRWEKI-UHFFFAOYSA-N
• SMILES: CC(=O)SCCOCCOCCOCCO

S-acetyl-PEG4-alcohol(CAT: I016485) is a versatile polyethylene glycol (PEG) derivative featuring a four-unit PEG spacer with a terminal hydroxyl group and an acetyl-protected thiol. This reagent is widely used in bioconjugation, surface modification, and linker chemistry, providing excellent water solubility and reduced steric hindrance. The PEG4 spacer enhances molecular flexibility and stability, while the acetyl group protects reactive thiols for controlled release or subsequent functionalization. Its balanced hydrophilic-lipophilic profile makes it suitable for applications in drug delivery, targeted therapeutics, and material science research where improved solubility and minimized aggregation are desired. Ideal for advanced bioconjugation strategies.