Bis-PEG2-acid

• CAT Number: I014245
• CAS Number: 19364-66-0
• Molecular Formula: C8H14O6
• Molecular Weight: 206.19
• Purity: ≥95%
• Synonyms: 3-[2-(2-carboxyethoxy)ethoxy]propanoic acid
• InChI: InChI=1S/C8H14O6/c9-7(10)1-3-13-5-6-14-4-2-8(11)12/h1-6H2,(H,9,10)(H,11,12)
• InChIKey: BOXWYBCUJGWEOJ-UHFFFAOYSA-N
• SMILES: C(COCCOCCC(=O)O)C(=O)O

Bis-PEG2-acid(CAT: I014245) is a bifunctional polyethylene glycol (PEG) linker containing two terminal carboxylic acid groups. With its short PEG2 backbone, it provides hydrophilicity and enhanced solubility while serving as a versatile spacer in chemical biology and drug development applications. Bis-PEG2-acid is commonly used for bioconjugation, including the modification of peptides, proteins, and small molecules through amide bond formation. The dual carboxylate groups allow for symmetric coupling or crosslinking strategies, making it useful in linker design for targeted drug delivery, PEGylation, and polymer-based materials. Its stability, water solubility, and reactivity make it a valuable building block for biomedical and synthetic research.