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Latest products update, new products introduction, PEG and biopolymer breakthrough research and products news.
Regulatory updates on PEGylated drugs and biopolymer medical devices.

Bifunctional Multi-Arm PEG Products

Our Multi-Arm PEG Products4-Arm PEG-X/YBifunctional 4-Arm PEG reagents have two functional groups X/Y with 1:3 ratio or 2:2 ratio. We started offering this series of special reagents as customs synthesis with the following combinations. We are also listing some of these reagents as regular catalog products that are ready to ship overnight.We offer three ratios […]

Is Your Maleimide Thiol Chemistry Stable?

The typical PEG-maleimide-thiol reaction results in thiosuccinimide formation which is reversible, with PEG-maleimide elimination occurring slowly under biologically relevant conditions. The reversed reaction leads to the breakage of the maleimide-thiol linkage and the loss of PEG from the thiol/cysteine-containing molecules. If the maleimide-thiol chemistry does not work for your application, you may consider alternatives with […]