TCO-PEG36-acid，TCO-PEG36-COOH

Bis-PEG5-PFP ester

Biotin-PEG12-Gly-Gly-Gly

Fmoc-PEG4-Ala-Ala-Asn-PAB

Bis-PEG9-PFP ester

m-PEG3-Sulfone-PEG3-t-butyl ester，m-PEG3-Sulfone-PEG3-Boc

t-Butoxycarbonyl-PEG4-sulfonic acid，Boc-PEG4-sulfonic acid

Tos-PEG5-CH2CO2H

(S, R, S)-AHPC-PEG4-tosyl

Propargyl-PEG3-phosphonic acid

TCO-PEG3-NHS ester

TCO-PEG6-NHS ester

TCO-PEG4-amine

Bis-PEG13-PFP ester

Acid-PEG5-NHS ester，Acid-C2-PEG4-C2-NHS ester

m-PEG5-phosphonic acid

Methyltetrazine-PEG12-Maleimide

(S, R, S)-AHPC-PEG4-amine hydrochloride salt

Bis-PEG7-PFP ester

SPDP-PEG36-NHS ester