4-Arm-PEG-OH (MW 20000)
4-Arm-PEG-OH (MW 20000) is a PEG derivative with a four-arm structure and a hydroxyl (OH) functional group. 4-Arm-PEG-OH (MW 20000) reacts with functional groups on biomolecules (such as proteins, peptides, antibodies, etc.) through hydroxyl groups and can be used for dr_ug delivery.