Figure 1.
Synthetic route of 4-arm-PEG-TPGS.
Abbreviations: PEG, polyethylene glycol; TPGS, D-α-tocopherol polyethylene glycol succinate; SA, succinic anhydride; DMAP, 4-dimethylamino pyridine; DCC, dicyclohexylcarbodiimide; RT, room temperature.
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