| | Identification | Back Directory |  | [Name] 
 MPEG3-CH2CH2COOH
 |  | [CAS] 
 67319-28-2
 |  | [Synonyms] 
 mPEG4-COOH
 m-PEG4-Acid
 Methyl-PEG3-acid
 MPEG3-CH2CH2COOH
 COOHCH2CH2-PEG3-OME
 mPEG3-propionic acid
 4,7,10,13-Tetraoxatetradecanoic acid
 2,5,8,11-Tetraoxa-14-tetradecanoic Acid
 |  | [Molecular Formula] 
 C10H20O6
 |  | [MDL Number] 
 MFCD11041124
 |  | [MOL File] 
 67319-28-2.mol
 |  | [Molecular Weight] 
 236.26
 | 
 | Chemical Properties | Back Directory |  | [Boiling point ] 
 352.3±32.0 °C(Predicted)
 |  | [density ] 
 1.105±0.06 g/cm3(Predicted)
 |  | [storage temp. ] 
 Sealed in dry,2-8°C
 |  | [solubility ] 
 Soluble in Water
 |  | [form ] 
 Liquid
 |  | [pka] 
 4.28±0.10(Predicted)
 |  | [color ] 
 Colorless to light yellow
 | 
 | Hazard Information | Back Directory |  | [Description] 
 m-PEG4-acid 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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