4 Arm PEG-MAL

4 arm PEG-maleimide (4 arm PEG-MAL) is a product with a maleimide functional group at the end of each of the 4 arms. The average molecular weight of each arm is calculated by taking the total MW and dividing by the number of arms. PEGylation can improve the properties of these molecules, including solubility, stability, and pharmacokinetics.