Tr-PEG7，Tr-PEG6-OH

S-acetyl-PEG3-t-butyl ester，S-acetyl-PEG3-Boc

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

Azidobutanamide-Tri-(m-PEG8-ethoxymethyl)-methane

TCO-PEG5-GGG-NH2，Amine-GGG--PEG5-TCO

Azido-PEG8-CH2CO2-NHS，Azido-PEG8-C1-NHS ester

t-Boc-N-Amido-PEG3-propargyl，Boc-NH-PEG3-propargyl

Bis-Mal-PEG11

Azide-PEG7-Tos

HO-PPG1-PEG2-PPG1-OH，Propanol-PEG3-CH2OH

Cy5-PEG5-azide

Bromoacetamido-PEG5-azide

Fmoc-PEG12-alcohol

DNP-PEG6-acid

Tr-PEG4，Tr-PEG3-OH

S-acetyl-PEG4-t-butyl ester，S-acetyl-PEG4-Boc

N-Boc-N-bis(PEG1-azide)，N-Boc-N-bis(C2-PEG1-azide)

Azido-PEG1-CH2CO2H，(2-Azidoethoxy)acetic acid

Bis-Mal-PEG19

S-acetyl-PEG4-alcohol