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Acid-PEG9-NHS ester

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Category	Acid-PEGn-NHS ester
Catalog NO.	BPG-1027
Product Name	Acid-PEG9-NHS ester
CAS	1895916-27-4
Molecular Formula	C26H45NO15
Molecular Weight	611.64

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Description	Acid-PEG9-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-PEG9-NHS ester; COOH-PEG9-SPA; COOH-PEG9-NHS; 31-[(2,5-Dioxo-1-pyrrolidinyl)oxy]-31-oxo-4,7,10,13,16,19,22,25,28-nonaoxahentriacontan-1-oic acid; 4,7,10,13,16,19,22,25,28-Nonaoxahentriacontan-1-oic acid, 31-[(2,5-dioxo-1-pyrrolidinyl)oxy]-31-oxo-
IUPAC Name	3-[2-[2-[2-[2-[2-[2-[2-[2-[3-(2,5-dioxopyrrolidin-1-yl)oxy-3-oxopropoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]propanoic acid
Canonical SMILES	C1CC(=O)N(C1=O)OC(=O)CCOCCOCCOCCOCCOCCOCCOCCOCCOCCC(=O)O
InChI	InChI=1S/C26H45NO15/c28-23-1-2-24(29)27(23)42-26(32)4-6-34-8-10-36-12-14-38-16-18-40-20-22-41-21-19-39-17-15-37-13-11-35-9-7-33-5-3-25(30)31/h1-22H2,(H,30,31)
InChIKey	BJOKQEMLFQBOQZ-UHFFFAOYSA-N
Boiling Point	685.1±65.0°C at 760 mmHg
Purity	≥95%
Density	1.3±0.1 g/cm3
Solubility	Soluble in DMSO
Related CAS	1643594-31-3 (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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