m-PEG-Mal (Methoxy PEG Maleimide) is a linear monofunctional methyl ether PEG with a reactive maleimide group attached to its end. When the pH value is 6.5~7.5, between maleimide and thiol It is easy to form stable thioether bonds. Mainly used in medical research, drug release, nanotechnology and new material research, cell culture.