Acid-PEG3-mono-methyl ester

• CAT Number: I015965
• CAS Number: 1807505-26-5
• Molecular Formula: C11H20O7
• Molecular Weight: 264.27
• Purity: ≥95%
• Synonyms: 3-[2-[2-(3-methoxy-3-oxopropoxy)ethoxy]ethoxy]propanoic acid
• InChI: InChI=1S/C11H20O7/c1-15-11(14)3-5-17-7-9-18-8-6-16-4-2-10(12)13/h2-9H2,1H3,(H,12,13)
• InChIKey: GIIORLLUIQECST-UHFFFAOYSA-N
• SMILES: COC(=O)CCOCCOCCOCCC(=O)O

Acid-PEG3-mono-methyl ester（Cat No.:I015965）is a short-chain polyethylene glycol derivative composed of three ethylene glycol units, terminating with a carboxylic acid at one end and a methyl ester at the other. This bifunctional design provides versatile reactivity, enabling amide or ester coupling with biomolecules, peptides, or polymers. The PEG3 spacer improves solubility, reduces aggregation, and offers flexibility in molecular design. Commonly used in drug discovery, bioconjugation, and materials research, Acid-PEG3-mono-methyl ester serves as a valuable linker or intermediate for constructing functionalized biomaterials and therapeutic conjugates.