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Acid-PEG2-NHS ester

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Category	Acid-PEGn-NHS ester
Catalog NO.	BPG-1035
Product Name	Acid-PEG2-NHS ester
CAS	2752068-22-5
Molecular Formula	C12H17NO8
Molecular Weight	303.27

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Description	Acid-PEG2-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-PEG2-NHS ester; COOH-PEG2-SPA; COOH-PEG2-NHS; 3-(2-{3-[(2,5-Dioxo-1-pyrrolidinyl)oxy]-3-oxopropoxy}ethoxy)propanoic acid; Propanoic acid, 3-[2-[3-[(2,5-dioxo-1-pyrrolidinyl)oxy]-3-oxopropoxy]ethoxy]-
IUPAC Name	3-[2-[3-(2,5-dioxopyrrolidin-1-yl)oxy-3-oxopropoxy]ethoxy]propanoic acid
Canonical SMILES	C1CC(=O)N(C1=O)OC(=O)CCOCCOCCC(=O)O
InChI	InChI=1S/C12H17NO8/c14-9-1-2-10(15)13(9)21-12(18)4-6-20-8-7-19-5-3-11(16)17/h1-8H2,(H,16,17)
InChIKey	IWDVUAAFWRODRC-UHFFFAOYSA-N
Boiling Point	479.0±55.0°C at 760 mmHg
Purity	≥95%
Density	1.38±0.1 g/cm3
Related CAS	1643594-31-3 (polymer)
Appearance	Pale Yellow Oily Matter
Storage	Store at 2-8°C

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