Mal-Amido-PEG4-t-butyl ester，Mal-Amido-PEG4-Boc

Bis-Mal-PEG11

6-(tert-Butoxy)-6-oxohexanoic NHS ester

Alkynyl Palmitic Acid，hexadec-15-ynoic acid

Bis-Mal-PEG19

N-Boc-N'-(PEG1-t-butyl ester)-L-Lysine-OH

Mal-PEG5-PFP

4-bromobutylphosphonic acid

Mal-amido-PEG12-NHS

Cbz-N-amido-PEG10-acid

N-(4-Carboxycyclohexylmethyl)maleimide ，4-((2,5-Dioxo-2H-pyrrol-1(5H)-yl)methyl)cyclohexanecarboxylic acid

Ald-Phenyl-PEG5-t-butyl ester，Ald-Ph-PEG5-Boc

Azido-PEG4-CH2CO2-NHS

Ald-CH2-PEG4-CH2CO2tBu，Ald-CH2-PEG3-CH2-Boc

5-azidopentan-1-ol

5-Hexynoic Acid-NHS Ester，Propargyl-C2-NHS ester

Ald-PEG4-azide，N3-PEG4-CH2CH2CHO

Acid-PEG4-mono-methyl ester

Ald-Ph-PEG4-PFP，ALD-PEG4-OPFP

4-Hydroxy-butyric acid tert-butyl ester，tert-Butyl 4-hydroxybutanoate