Bis-PEG6-acid

• CAT Number: I014253
• CAS Number: 119189-70-7
• Molecular Formula: C16H30O10
• Molecular Weight: 382.40
• Purity: ≥95%
• Synonyms: 3-[2-[2-[2-[2-[2-(2-carboxyethoxy)ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]propanoic acid
• InChI: InChI=1S/C16H30O10/c17-15(18)1-3-21-5-7-23-9-11-25-13-14-26-12-10-24-8-6-22-4-2-16(19)20/h1-14H2,(H,17,18)(H,19,20)
• InChIKey: YFBGEYNLLRKUTP-UHFFFAOYSA-N
• SMILES: C(COCCOCCOCCOCCOCCOCCC(=O)O)C(=O)O

Bis-PEG6-acid(CAT: I014253) is a bifunctional polyethylene glycol linker featuring two terminal carboxylic acid groups separated by a hexaethylene glycol (PEG6) spacer. The PEG6 backbone imparts hydrophilicity, flexibility, and aqueous solubility, reducing steric hindrance in conjugation reactions. Its reactive carboxyl groups enable straightforward coupling to amines via amide bond formation, making it highly useful in bioconjugation, surface modification, and drug delivery research. Bis-PEG6-acid is widely applied in antibody–drug conjugates (ADCs), polymer–protein conjugation, and material science studies where controlled spacing and solubility are critical. Its well-defined PEG length provides consistent performance in chemical biology and biomedical engineering applications.