Thalidomide-O-amido-PEG4-azide

Mal-PEG1-t-butyl ester，Mal-PEG1-Boc

Azido-PEG8-PFP ester

Mal-PEG2-t-butyl ester，Mal-PEG2-C2-Boc

Ald-Ph-PEG3-NH-Boc，Ald-Ph-amido-C2-PEG3-NH-Boc

Thalidomide-O-PEG6-NHS ester

Mal-PEG2-Amide

Thalidomide-O-PEG4-Amine

Azido-PEG2-CH2CO2H

Ald-Ph-PEG2-NH-Boc

Mal-PEG4-t-butyl ester，Mal-PEG4-Boc

Ald-Phenyl-PEG2-t-butyl ester，Ald-Ph-PEG2-Boc

Ald-CH2-PEG10-t-butyl ester，Ald-CH2-PEG10-Boc

Mal-amido-PEG4-TFP ester

Mal-PEG2-PFP

Mal-PEG12-t-butyl ester，Mal-PEG12-Boc

Ald-Ph-PEG2-amine TFA salt，Ald-Ph-amido-C2-PEG2-amine

Thalidomide-O-PEG4-Propargyl，Thalidomide-PEG4-Propargyl

Methoxycarbonyl-PEG4-t-butyl ester，Boc-PEG4-methyl propionate

Acid-PEG3-t-butyl ester，Acid-PEG3-C2-Boc