t-Boc-Cystamine，Boc-Cystamine

Aminoethyl-SS-ethylalcohol

Propargyl-PEG1-SS-PEG1-propargyl

Boc-aminooxy-ethyl-SS-propanol

Active-Mono-Sulfone-PEG9-DBCO

BCN-PEG3-Val-Cit

Hydrox-PEG7-Tos，Tos-PEG6-OH ，PEG7-Tos

DBCO-PEG4-Val-Cit-PAB-PNP

Boc-NH-ethyl-SS-propionic acid

Mal-amido-PEG2-Val-Cit-PAB-OH

Hydroxy-PEG2-t-butyl ester，Hydroxy-PEG2-(CH2)2-Boc

Hydroxy-PEG7-t-butyl ester，Hydroxy-PEG7-Boc

Azidoethyl-SS-propionic acid

Hydroxy-PEG16-t-butyl ester，Hydroxy-PEG16-Boc

PC SPDP-NHS carbonate ester

3-(Azido-PEG5-amino)propanol

NHS-SS-biotin

Alkyne-Val-Cit-PAB-PNP

Hydroxy-PEG12-t-butyl ester，Hydroxy-PEG12-Boc

Hydrox-PEG4-Tos，PEG4-Tos