Bromo-PEG4-t-butyl ester

CBZ-PEG2-bromide

Bromo-PEG2-propionic acid

Bromo-PEG2-azide

CBZ-NH-PEG4-propionic acid

CBZ-NH-PEG5-propionic acid

Azido-PEG4-CH2CO2H

Azido-PEG36-acid

Acid-PEG5-mono-methyl ester

Ald-Ph-PEG24-NHS ester

Methoxycarbonyl-PEG4-t-butyl ester，Boc-PEG4-methyl propionate

Azido-PEG6-NHS ester

Ald-Ph-PEG6-t-butyl ester，Ald-Ph-PEG6-Boc

Acid-PEG6-mono-methyl ester

Ald-Ph-PEG4-PFP，ALD-PEG4-OPFP

Acid-PEG10-t-butyl ester

Cbz-N-amido-PEG5-acid，Cbz-NH-PEG5-C2-acid

Azido-PEG12-acid

Azido-PEG5-acid，N3-PEG5-COOH

m-PEG4-benzaldehyde