Mal-PEG8-t-butyl ester，Mal-PEG8-Boc

Azido-PEG6-PFP ester

Mal-PEG5-t-butyl ester，Mal-PEG5-Boc

Thalidomide-O-PEG4-NHS ester

Mal-PEG4-alcohol，Mal-PEG4-OH

Azido-PEG12-t-butyl ester，Azido-PEG12-Boc

Mal-amido-PEG24-TFP ester

Azido-PEG3-succinimidyl carbonate，Azido-PEG3-O-NHS ester

17-(Azide-PEG6-ethylcarbamoyl)heptadecanoic t-butyl ester

Cbz-N-amido-PEG2-acid，Cbz-NH-PEG2-C2-acid

Mal-amido-PEG12-NHS

Azido-PEG8-acid，N3-PEG8-CH2CH2COOH

Azido-PEG4-PFP ester

Azido-PEG6-t-butyl ester，Azido-PEG6-C2-Boc

Mal-amido-PEG11-NH-Boc

Mal-PEG3-NHS ester

Thalidomide-O-PEG4-Acid

Fmoc-N-amido-PEG11-CH2-aldehyde

Acid-PEG12-t-butyl ester

m-PEG4-benzaldehyde