757837

Poly(ethylene glycol) 2-mercaptoethyl ether acetic acid

average M_n 3,400 (n~77), cross-linking reagent amine reactive, cross-linking reagent thiol reactive

• Synonym(s): Polyethylene glycol, mercaptoPEG acid, mercaptopoly(ethylene glycol) carboxylic acid, mercaptopolyoxyethylene acetic acid, thio-PEG, thiol-PEG-acid, thiol-PEG-carboxylate
• Linear Formula: HSC₂H₄O(C₂H₄O)_nCH₂CO₂H
• CAS Number: 165729-81-7
• UNSPSC Code: 12162002
• NACRES: NA.23

Properties

• product name: Poly(ethylene glycol) 2-mercaptoethyl ether acetic acid, average M_n 3,500
• form: solid
• Quality Level: 100
• mol wt: PEG average M_n 3,400 (n~77); average M_n 3,500
• reaction suitability: reagent type: cross-linking reagent; reactivity: amine reactive; reagent type: cross-linking reagent; reactivity: thiol reactive
• transition temp: T_m 52-57 °C
• Ω-end: thiol
• α-end: carboxylic acid
• polymer architecture: shape: linear; functionality: heterobifunctional
• storage temp.: −20°C

Description

Application

Reported applications include: bioconjugation, drug delivery, PEG hydrogel, crosslinker, and surface functionalization.

Safety Information

• Storage Class Code: 11 - Combustible Solids
• WGK: WGK 3
• Flash Point(F): >604.4 °F
• Flash Point(C): > 318 °C