Compound Q&A
What are the physical and chemical properties of m-PEG4-NHS ester (CAS: 622405-78-1)?
Answer
m-PEG4-NHS ester (CAS: 622405-78-1) is a water-soluble compound with a molecular weight of approximately 5,000 Da. It has a pKa of about 8.0, making it amphoteric. This NHS ester functionalized polymer reacts readily with primary amines to form stable amide bonds. It is soluble in water and common organic solvents. Its crystalline form is not common; typically, it is supplied as a solution or as a lyophilized powder.
About
CAS No
622405-78-1
English Name
m-PEG4-NHS ester
Molecular Formula
C14H23NO8
Molecular Weight
333.34 g/mol
SMILES
COCCOCCOCCOCCC(=O)ON1C(=O)CCC1=O
InChIKey
MAYFFZZPEREGBQ-UHFFFAOYSA-N
Last Updated: 2025-10-16 16:48
