Lipoamido-PEG4-acid

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Category	Lipoamido-PEGn-acid
Catalog NO.	BPG-0294
Product Name	Lipoamido-PEG4-acid
CAS	1314378-10-3
Molecular Formula	C19H35NO7S2
Molecular Weight	453.61

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Description	Lipoamido-PEG4-acid is a PEG linker containing a lipoic acid group and a terminal carboxylic acid. Lipoic acid contains two sulfur atoms (at C6 and C8) connected by a disulfide bond and is thus considered to be oxidized although either sulfur atom can exist in higher oxidation states. 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 linker increases the water solubility of the compound.
Synonyms	Lipoamido-PEG4-CH2CH2COOH; LA-PEG4-COOH; Lipoamido-PEG4-COOH; 3-[2-[2-[2-[2-[5-(dithiolan-3-yl)pentanoylamino]ethoxy]ethoxy]ethoxy]ethoxy]propanoic acid; 4,7,10,13-Tetraoxa-16-azaheneicosanoic acid, 21-(1,2-dithiolan-3-yl)-17-oxo-; 21-(1,2-Dithiolan-3-yl)-17-oxo-4,7,10,13-tetraoxa-16-azahenicosan-1-oic acid
IUPAC Name	3-(2-(2-(2-(2-(5-(1,2-dithiolan-3-yl)pentanamido)ethoxy)ethoxy)ethoxy)ethoxy)propanoic acid
Canonical SMILES	C1CSSC1CCCCC(=O)NCCOCCOCCOCCOCCC(=O)O
InChI	InChI=1S/C19H35NO7S2/c21-18(4-2-1-3-17-6-16-28-29-17)20-7-9-25-11-13-27-15-14-26-12-10-24-8-5-19(22)23/h17H,1-16H2,(H,20,21)(H,22,23)
InChIKey	QJFPDZROPSGMGV-UHFFFAOYSA-N
Purity	≥95%
Density	1.2±0.1 g/cm3
Solubility	Soluble in DMSO
Related CAS	1334172-69-8 (R-isomer) 1334172-71-2 (polymer)
Appearance	Light Yellow or White Solid
Storage	Store at 2-8°C for short term (days to weeks) or -20°C for long term (months to years)

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