8-Arm PEG-SH (MW 20000)

8-Arm PEG-SH (MW 20000) (8-Arm PEG-Thiol (MW 20000)) is a multi-arm PEG derivative with thiol groups at each end of the eight arms. 8-Arm PEG-SH (MW 20000) can be used for dr_ug delivery.