3,4-Dibromo-Mal-PEG2-Boc-Amine，3,4-Dibromo-Mal-PEG2-N-Boc

Azido-PEG8-t-butyl ester，Azido-PEG8-Boc

Mal-PEG4-PFP

m-PEG3-4-nitrophenyl carbonate

Mal-PEG1-Bromide

Azido-PEG2-t-butyl ester，Azido-PEG2-C2-Boc

Mal-PEG4-NHS ester

Azido-PEG3-Maleimide Kit，Azido-PEG3-maleimide

Azido-PEG3-aminoacetic acid-NHS ester

Azide-PEG6-Tos

m-PEG3-acid chloride，m-PEG3-Propanoyl chloride

Azido-PEG3-phosphonic acid

Bromo-PEG10-t-butyl ester，Bromo-PEG10-Boc

Fmoc-N-amido-PEG9-acid，Fmoc-NH-PEG9-CH2CH2COOH

PEG5-Tos，Tetraethylene glycol monotosylate

Mal-PEG4-Lys(t-Boc)-NH-m-PEG24

Azido-PEG5-PFP ester

PEG25，HO-PEG24-OH

N-Biotin-N-bis(PEG4-acid)

N-Boc-N-bis(PEG3-acid)