点击放大环状聚乙二醇-聚乙二醇臂-氨基(n=45)274-crown-91-PEG45-NH2; Primary amine-terminated PEG arm on a cyclic poly(ethylene glycol) scaffold (arm n=45)
点击放大环状聚乙二醇-聚乙二醇臂-炔基(n=45)274-crown-91-PEG45-Alkyne; Terminal alkyne-terminated PEG arm on a cyclic poly(ethylene glycol) scaffold (arm n=45)