Iodoacetamido-PEG8-t-butyl ester

Fmoc-PEG5-NHS ester

Tr-PEG6，Tr-PEG5-OH

Mal-PEG4-Glu(TFP ester)-NH-m-PEG24

m-PEG7-NHS ester

m-PEG8-BBTA

Azido-PEG3-CH2CO2Me

Acid-PEG4-S-S-PEG4-acid

m-PEG3-4-nitrophenyl carbonate

5-(tetrahydro-2H-pyran-2-yloxy)pent-3-yn-1-PEG4-azide

Azido-PEG4-Val-Cit-PAB-OH

Fmoc-PEG12-alcohol

m-PEG5-azide

Fmoc-N-amido-PEG1-acid，Fmoc-NH-PEG1-C2-acid

m-PEG9-NHS ester

m-PEG3-triethoxysilane，m-PEG3-amido-C3-triethoxysilane

Diketone-PEG4-Biotin

m-PEG7-Ms

m-PEG8-NHS ester

Fmoc-PEG8-alcohol