Compound Q&A

What are the physical and chemical properties of m-PEG3-SH (CAS: 31521-83-2)?

Answer

m-PEG3-SH
m-PEG3-SH (CAS: 31521-83-2) is a hydroxyl-terminated polyethylene glycol (PEG), with a molecular weight of approximately 2000 Da. It is a clear, colorless liquid at room temperature. It has good solubility in water and organic solvents. Chemically, it is highly reactive due to the presence of the thiol (-SH) group, making it useful for thiolation reactions in various applications.

About

CAS No 31521-83-2
English Name m-PEG3-SH
Molecular Formula C7H16O3S
Molecular Weight 180.27 g/mol
SMILES COCCOCCOCCS
InChIKey DMFFSDWRRLCKKN-UHFFFAOYSA-N
Last Updated: 2025-10-28 10:54

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