m-PEG8-Mal

m-PEG10-t-butyl ester，m-PEG10-Boc

3-(m-PEG8-ethoxycarbonyl)propanoic acid，m-PEG8-ethoxycarbonyl-propanoic acid

Hydroxy-PEG3-acrylate

m-PEG1-acid，3-Methoxypropanoic acid

m-PEG5-Ms

Hydroxy-PEG3-methyl ester，Hydroxy-PEG3-C2-methyl ester

HO-PPG1-PEG2-PPG1-OH，Propanol-PEG3-CH2OH

Tr-PEG6，Tr-PEG5-OH

m-PEG7-CH2COOH

m-PEG4-sulfonic acid

m-PEG5-nitrile

C11-PEG4-alcohol

m-PEG4-aldehyde

m-PEG7-Tos

m-PEG16-acid

m-PEG24-acid

PEG25，HO-PEG24-OH

m-PEG3-t-butyl ester，m-PEG3-Boc

m-PEG24-NHS ester