1,2,3-Propanetriyltris(oxy)tris[PEG5-Azide]

m-PEG4-aldehyde

Bromoacetamido-PEG4-acid，1-Bromo-2-oxo-6,9,12,15-tetraoxa-3-azaoctadecan-18-oic acid

Amino-PEG23-acid HCl salt

m-PEG11-amine，mPEG11-NH2

m-PEG6-bromide，m-PEG6-Br

Amino-PEG1-acid，3-(2-Aminoethoxy)propanoic acid

t-boc-N-amido-PEG7-amine，Boc-NH-PEG7-NH2，Boc-NH-PEG7-CH2CH2NH2

Amino-PEG11-t-butyl ester，H2N-PEG11-CH2CH2COOtBu

N-(Azido-PEG3)-PEG4-t-butyl ester

N-(Azido-PEG10)-N-PEG10-t-butyl ester

Amino-PEG24-alcohol

N-(Azido-PEG10)-N-(PEG10-NH-Boc)-PEG10-acid

N-methyl-N'-methyl-O-(m-PEG4)-O'-(azide-PEG4)-Cy5

Benzyl-PEG2-CH2CO2tBu，BnO-PEG1-CH2CO2tBu

Bis-(N,N'-NHS-PEG4)-Cy5，Bis-(N,N'-PEG4-NHS ester)-Cy5

Biotin-PEG3-NHS ester

N-(Azido-PEG4)-N-bis(BocNH-PEG4)

N-(AminooxRuixiG3)-N-bis(PEG4-t-butyl ester)， N-(AminooxRuixiG3)-N-bis(PEG4-Boc)

4-Azide-TFP-Amide-PEG4-acid