Azido-PEG1-t-butyl ester，Azido-PEG1-Boc

5-(Azide-PEG9-ethylcarbamoyl)pentanoic t-butyl ester

Azido-PEG8-NHS ester，N3-PEG8-NHS

Thalidomide-O-PEG5-Tosyl

Thalidomide-O-PEG2-Acid

DBCO-PEG8-amine，DBCO-PEG8-NH2

Azido-PEG5-CH2CO2-PFP

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

Azido-PEG4-CH2CO2-NHS

Mal-PEG1-acid

Azido-PEG7-NHS ester

Mal-amido-PEG8-NHS

Ald-Ph-PEG5-azide

Acid-PEG3-PFP ester

Azido-PEG4-CH2CO2H

Mal-PEG3-acid，Maleimido-tri(ethylene glycol)-propionic acid

Ald-Ph-PEG4-PFP，ALD-PEG4-OPFP

Mal-amido-PEG2-acid

Mal-PEG5-amine TFA salt

Cbz-N-amido-PEG3-acid，Cbz-NH-PEG3-C2-acid