Azido-PEG11-azide，N3-PEG11-N3

N-Me-N-bis(PEG3-OH)，N-Me-N-bis-PEG4

t-boc-N-amido-PEG6-azide，Boc-NH-PEG6-azide

DNP-PEG6-t-butyl ester，DNP-PEG6-Boc

PC Azido-PEG11-NHS carbonate ester

Thiol-PEG12-acid，HS-PEG12-CH2CH2COOH

Amino-SS-PEG12-acid

m-PEG5-nitrile

Propargyl-PEG1-SS-alcohol

Bromo-PEG2-CH2CO2tBu，Bromo-PEG2-CH2-Boc

N-Benzyl-N-bis(PEG3-acid)

tBOC-NH-PEG-SVA，MW:10000

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

N-(Azido-PEG4)-L-Lyisine

N-Boc-PEG4-bromide

Methyltetrazine-PEG9-acid

Fmoc-N-amido-PEG1-acid，Fmoc-NH-PEG1-C2-acid

Bis-PEG25-acid

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

Ald-Ph-PEG4-PFP，ALD-PEG4-OPFP