Mal-PEG2-Val-Cit-PAB-OH，Mal-PEG2-Val-Cit-amido-PAB-OH

Azidoethyl-SS-ethylazide

Amino-SS-PEG12-acid

Hydrox-PEG21-Tos，PEG21-Tos

AZD-PEG2-acid

THP-SS-PEG1-Tos

Biotin-bisamido-SS-NHS，NHS-SS-(+)-Biotin

Azido-SS-PEG2-acid，Azido-C2-SS-PEG2-C2-acid

Mal-PEG4-Val-Cit-PAB-PNP

Diketone-PEG11-Diketone

Acid-PEG2-SS-PEG2-acid

Hydroxy-PEG3-CH2CO2tBu，Hydroxy-PEG3-CH2-Boc

Fmoc-NH-ethyl-SS-propionic NHS ester

Mal-NH-ethyl-SS-propionic acid

Acid-PEG3-SS-PEG3-acid

Fmoc-NH-ethyl-SS-propionic acid

Propargyl-PEG1-SS-PEG1-acid

Propargyl-PEG1-SS-PEG1-PFP ester

N-（Azido-PEG3）-N-Boc-PEG3-acid小分子

Fmoc-N-amido-PEG8-acid小分子PEG