Ald-Ph-PEG2-acid，Ald-Ph-amido-PEG2-C2-acid

Mal-PEG4-PFP

Mal-amido-PEG10-acid

Azido-PEG2-CH2CO2-NHS

Azido-PEG16-NHS ester

Mal-PEG3-t-butyl ester，Mal-PEG3-Boc

Acid-PEG1-t-butyl ester，Acid-PEG1-C2-Boc

Azido-PEG3-CH2CO2-NHS

Fmoc-N-amido-PEG4-CH2-aldehyde

Azido-PEG10-acid

Cbz-N-amido-PEG4-acid，Cbz-NH-PEG4-C2-acid

Mal-PEG2-NHS ester

Thalidomide-O-amido-PEG4-propargyl

Mal-PEG5-acid，MAL-PEG5-COOH

Thalidomide-O-PEG6-Acid

Azido-PEG2-acid，Azido-PEG2-C2-acid

Ald-Ph-PEG3-O-NH-Boc，Ald-Ph-PEG4-NH-Boc

Mal-amido-PEG2-NHS，Maleimide-PEG2-NHS Ester

Mal-amido-PEG4-acid

Mal-PEG6-t-butyl ester，Mal-PEG6-Boc