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mPEG3-CH2CH2COONHS ester

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Category	Small-molecule Methoxy Linear PEG (mPEG)
Catalog NO.	BPG-1975
Product Name	mPEG3-CH2CH2COONHS ester
CAS	622405-78-1
Molecular Formula	C14H23NO8
Molecular Weight	333.33

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Description	m-PEG4-NHS ester is a PEG derivative containing an NHS ester. The NHS ester can be used to label the primary amines (-NH2) of proteins, amine-modified oligonucleotides, and other amine-containing molecules. The hydrophilic PEG spacer increases solubility in aqueous media.
Synonyms	Methyl-PEG4-NHS Ester; (2,5-dioxopyrrolidin-1-yl) 3-[2-[2-(2-methoxyethoxy)ethoxy]ethoxy]propanoate
IUPAC Name	(2,5-dioxopyrrolidin-1-yl) 3-[2-[2-(2-methoxyethoxy)ethoxy]ethoxy]propanoate
Canonical SMILES	COCCOCCOCCOCCC(=O)ON1C(=O)CCC1=O
InChI	InChI=1S/C14H23NO8/c1-19-6-7-21-10-11-22-9-8-20-5-4-14(18)23-15-12(16)2-3-13(15)17/h2-11H2,1H3
InChIKey	MAYFFZZPEREGBQ-UHFFFAOYSA-N
Boiling Point	431.7±55.0 °C at 760 mmHg
Purity	>97%
Density	1.2±0.1 g/cm3
Appearance	Solid
Storage	Pure form, -20°C, 3 years; In solvent, -80°C, 6 months; -20°C, 1 month
Exact Mass	333.14236669
LogP	-0.38220

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