JenKem Technology manufactures high quality activated PEG products for thiol PEGylation, or sulfhydryl PEGylation. Methoxy PEG Maleimide is selective for thiol groups on cystein side chains of proteins. The sterically bulky Y-shape PEG Maleimide facilitate the single point attachment to thiol containing molecules.Methoxy PEG Vinylsulfone is a sulfhydryl reactive PEG that reacts at high pH. Methoxy PEG Thiol (polydisperse or monodisperse PEGs) are thiol reactive towards HS groups on cysteine side chains under mild reaction conditions.
Activated PEG products for thiol PEGylation with molecular weights, branching, and functional groups not listed in our online catalog may be available by custom synthesis. Please inquire at tech@jenkemusa.com about pricing and availability of custom PEGs for thiol PEGylation.

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Y-shaped Maleimide PEGs
Y-Shape PEG Maleimide
U-shaped Branched PEG Maleimide
MPEG2 LYS MAL
Linear Maleimide PEGs
Methoxy PEG Maleimide
Linear Maleimide PEG PLA
PolyLactide Linear PEG Maleimide
Linear Vinylsulfone PEGs
Methoxy PEG Vinylsulfone
Linear Thiol PEGs
Methoxy PEG Thiol
Monodisperse Methoxy PEG Thiol
Thiol PEGylation Homobifunctional PEGs
thiol peg thiol
acrylate peg acrylate
maleimide peg maleimide
vinylsulfone peg vinylsulfone
tosylate peg tosylate
Monodisperse PEGs Functionalized with Thiol
Monodisperse Methoxy PEG Thiol
Monodisperse Thiol PEG Propionic Acid
Heterobifunctional PEGs Functionalized with Thiol Reactive Groups
Heterobifunctional Thiol Reactive PEGs
Multiarm Homofunctional PEGs Functionalized with Thiol Reactive Groups
Multiarm Homofunctional PEGs
Multiarm Heterobifunctional PEGs Functionalized with Thiol Reactive Groups
Multiarm Heterobifunctional PEGs