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m-PEG2-COOH - CAS 149577-05-9

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m-PEG2-COOH is a PEG linker containing a terminal carboxylic acid. The terminal carboxylic acid can react with primary amine groups in the presence of activators (e.g. EDC, or HATU) to form a stable amide bond. The hydrophilic PEG spacer increases solubility in aqueous media.

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Molecular Formula
C6H12O4
Molecular Weight
148.16

m-PEG2-COOH

    • Specification
      • Purity
        ≥95%
        Solubility
        Soluble in DMSO
        Appearance
        Pale Yellow or Colorless Oily Matter
        Storage
        Store at 2-8°C for short term (days to weeks) or -20°C for long term (months to years)
        Shipping
        Room temperature in continental US; may vary elsewhere.
        IUPAC Name
        3-(2-methoxyethoxy)propanoic acid
        Synonyms
        Propanoic acid, 3-(2-methoxyethoxy)-; m-PEG2-acid; mPEG1-OCH2CH2COOH; MeOCH2CH2OCH2COOH; methoxy-PEG1-Propionic acid
    • Properties
      • Boiling Point
        244.2±20.0°C (Predicted)
        Density
        1.098±0.06 g/cm3 (Predicted)
        InChI Key
        KWMXBFIAGYXCCC-UHFFFAOYSA-N
        InChI
        InChI=1S/C6H12O4/c1-9-4-5-10-3-2-6(7)8/h2-5H2,1H3,(H,7,8)
        Canonical SMILES
        COCCOCCC(=O)O
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