Bromoacetamido-PEG4-t-butyl ester，Bromoacetamido-PEG4-C2-Boc

Mal-PEG4-Glu(OH)-NH-m-PEG24

m-PEG4-CH2COOH

Ald-Ph-PEG24-TFP ester

N-(m-PEG4)-N'-(m-PEG4)-O-(m-PEG4)-O'-(propargyl-PEG4)-Cy5

Azido-PEG2-acid，Azido-PEG2-C2-acid

Tr-PEG9，Tr-PEG8-OH

m-PEG8-Tos

m-PEG16-acid

Mal-amido-PEG9-amine TFA salt，Mal-amido-PEG9-amine

N,N'-bis-(propargyl-PEG4)-Cy5

PEG21，HO-PEG20-OH

Bis-PEG11-NHS ester

Methyltetrazine-PEG8-acid

Azido-PEG9-NHS ester

t-Boc-N-Amido-PEG12-propargyl，Boc-NH-PEG12-propargyl

(2-pyridyldithio)-PEG4-alcohol

Methyltetrazine-PEG24-t-butyl ester

Bromo-PEG6-azide，溴-PEG6-叠氮化物

N-Boc-PEG16-alcohol