757837

Sigma-Aldrich

Poly(ethylene glycol) 2-mercaptoethyl ether acetic acid

average Mn 3,500

Synonym(s):
thiol-PEG-acid, thiol-PEG-carboxylate, thio-PEG, mercaptopoly(ethylene glycol) carboxylic acid, mercaptoPEG acid, mercaptopolyoxyethylene acetic acid
Linear Formula:
HSC2H4O(C2H4O)nCH2CO2H
CAS Number:

Quality Level

form

solid

mol wt

PEG average Mn 3,400 (n~77)
average Mn 3,500

reaction suitability

reagent type: cross-linking reagent
reactivity: amine reactive

reagent type: cross-linking reagent
reactivity: thiol reactive

transition temp

Tm 52-57 °C

Ω-end

thiol

α-end

carboxylic acid

polymer architecture

shape: linear
functionality: heterobifunctional

storage temp.

−20°C

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Packaging

500 mg in glass insert

Application

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

storage_class_code

11 - Combustible Solids

WGK Germany

WGK 3

Flash Point(F)

604.4 °F

Flash Point(C)

> 318 °C

Certificate of Analysis

Certificate of Origin

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