Bis-PEG2-acid

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Category	COOH-PEGn-COOH
Catalog NO.	BPG-0180
Product Name	Bis-PEG2-acid
CAS	19364-66-0
Molecular Formula	C8H14O6
Molecular Weight	206.19

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Description	Bis-PEG2-acid is a PEG linker containing two terminal carboxylic acid groups. The terminal carboxylic acids 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.
Synonyms	Propanoic acid, 3,3'-[1,2-ethanediylbis(oxy)]bis-; 3,3'-(Ethane-1,2-diylbis(oxy))dipropionic acid; 3,3'-(Ethylenedioxy)dipropionic acid; HOOCCH2CH2O-PEG1-CH2CH2COOH; Bis-PEG2-COOH; 1,2-Bis(2-carboxyethoxy)ethane
IUPAC Name	3-[2-(2-carboxyethoxy)ethoxy]propanoic acid
Canonical SMILES	C(COCCOCCC(=O)O)C(=O)O
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
Boiling Point	407.1±35.0°C (Predicted)
Melting Point	66°C
Purity	≥95%
Density	1.0869 g/cm3
Solubility	Soluble in DMF, DMSO, Water
Appearance	Pale Yellow or Colorless Oily Matter
Storage	Store at 2-8°C

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