N-(m-PEG4)-N'-(PEG2-NHS ester)-Cy5

Tr-PEG6，Tr-PEG5-OH

3,4-Dibromo-Mal-PEG2-Amine TFA salt，3,4-Dibromo-Mal-PEG2-amine

DBCO-PEG4-Val-Cit-PAB-PNP

N-(Tos-PEG4)-N-bis(PEG4-t-butyl ester)，N-(Tos-PEG4)-N-bis(PEG4-Boc)

m-PEG7-acid，m-PEG6-CH2CH2COOH

AZD-PEG2-PFP

Cy5-PEG5-amine HCl salt，Cy5-PEG5-amine hydrochloride

Cy5-PEG6-acid

Bromo-PEG3-alcohol，Br-PEG3-OH

m-PEG3-alcohol，m-PEG3-OH

N-Mal-N-bis(PEG4-NH-Boc)

Fmoc-PEG12-NHS ester

m-PEG48-Mal

N-(azide-PEG3)-N'-(Amine-C3-PEG4)-Cy5，N-(azide-PEG3)-N'-(Amine-C3-Amide-PEG4)-Cy5

Azido-PEG3-triethoxysilane，Azido-PEG3-amide-C3-triethoxysilane

Mal-amido-PEG6-NHS

Methyltetrazine-PEG4-acid，Methyltetrazine-PEG4-COOH

Ald-CH2-PEG4-t-butyl ester，Ald-CH2-PEG4-Boc

Fmoc-PEG4-alcohol，Fmoc-NH-PEG4-alcohol