Acid-PEG5-mono-methyl ester

• CAT Number: I015964
• CAS Number: 1309460-30-7
• Molecular Formula: C15H28O9
• Molecular Weight: 352.38
• Purity: ≥95%
• Synonyms: 3-[2-[2-[2-[2-(3-methoxy-3-oxopropoxy)ethoxy]ethoxy]ethoxy]ethoxy]propanoic acid
• InChI: InChI=1S/C15H28O9/c1-19-15(18)3-5-21-7-9-23-11-13-24-12-10-22-8-6-20-4-2-14(16)17/h2-13H2,1H3,(H,16,17)
• InChIKey: LSGMOHWEFFVQEO-UHFFFAOYSA-N
• SMILES: COC(=O)CCOCCOCCOCCOCCOCCC(=O)O

Acid-PEG5-mono-methyl ester（Cat No.:I015964）is a polyethylene glycol (PEG) derivative featuring a carboxylic acid group at one end and a methyl ester at the other, connected through a five-unit PEG spacer. The PEG chain imparts enhanced water solubility, flexibility, and reduced steric hindrance, making it valuable in drug conjugation, bioconjugation, and material science. Its dual functionality allows for versatile coupling reactions, such as amide bond formation with amines. Widely used in medicinal chemistry, it supports linker design in antibody-drug conjugates, peptide modification, and polymer functionalization.