Acid-PEG1-t-butyl ester，Acid-PEG1-C2-Boc

Mal-PEG3-alcohol

Methylamino-PEG4-t-butyl ester，Methylamino-PEG4-Boc

Fmoc-N-amido-PEG11-CH2-aldehyde

diethyl 10-bromodecylphosphonate

Mal-PEG8-t-butyl ester，Mal-PEG8-Boc

Ald-Ph-PEG5-azide

2-((Azido-PEG8-carbamoyl)methoxy)acetic acid

Ald-Ph-PEG3-azide，Ald-Ph-amido-C2-PEG3-azide

Bis-Mal-PEG6

Mal-PEG3-NHS ester

10-(tert-Butoxy)-10-oxodecanoic NHS ester

5-azidopentan-1-amine

Azido-PEG9-NHS ester

3,4-Dibromo-Mal-PEG8-acid

diethyl 4-bromobutylphosphonate

Bis-Mal-Lysine-PEG4-acid

3-Azido-alcohol

Acid-PEG10-t-butyl ester

Acid-PEG2-t-butyl ester，Acid-PEG2-C2-Boc