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Acid-PEG5-NHS ester

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Category	Acid-PEGn-NHS ester
Catalog NO.	BPG-1032
Product Name	Acid-PEG5-NHS ester
CAS	1343476-41-4
Molecular Formula	C18H29NO11
Molecular Weight	435.43

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Description	Acid-PEG5-NHS ester is a PEG linker containing a carboxylic acid and an NHS ester. The hydrophilic PEG spacer increases solubility in aqueous media. 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 NHS ester can be used to label the primary amines (-NH2) of proteins, amine-modified oligonucleotides, and other amine-containing molecules.
Synonyms	Acid-C2-PEG5-NHS ester; COOH-PEG5-SPA; COOH-PEG5-NHS; 4,7,10,13,16-Pentaoxanonadecanedioic acid, 1-(2,5-dioxo-1-pyrrolidinyl) ester; 19-((2,5-dioxopyrrolidin-1-yl)oxy)-19-oxo-4,7,10,13,16-pentaoxanonadecanoic acid; 4,7,10,13,16-Pentaoxanonadecan-1-oic acid, 19-[(2,5-dioxo-1-pyrrolidinyl)oxy]-19-oxo-
IUPAC Name	3-[2-[2-[2-[2-[3-(2,5-dioxopyrrolidin-1-yl)oxy-3-oxopropoxy]ethoxy]ethoxy]ethoxy]ethoxy]propanoic acid
Canonical SMILES	C1CC(=O)N(C1=O)OC(=O)CCOCCOCCOCCOCCOCCC(=O)O
InChI	InChI=1S/C18H29NO11/c20-15-1-2-16(21)19(15)30-18(24)4-6-26-8-10-28-12-14-29-13-11-27-9-7-25-5-3-17(22)23/h1-14H2,(H,22,23)
InChIKey	QMACGMMKGUAJOY-UHFFFAOYSA-N
Boiling Point	574.8±60.0°C (Predicted)
Purity	≥95%
Density	1.30±0.1 g/cm3 (Predicted)
Related CAS	1643594-31-3 (polymer)
Appearance	Pale Yellow Oily Matter
Storage	Store at 2-8°C

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