CHO-CH2-PEG2-CH2tBu-ester

tert-Butyl methyl(5-oxopentyl)carba mate

Nh-bis(peg2-propargyl)

Nh-bis(peg4-t-butyl ester)

3,,3-[氧化双(2,1-亚乙基氧基)]双丙胺

AZIDOETHYL-PEG2-T-BUTYLESTER

丙炔基-三聚乙二醇-溴代

三乙二醇单苯醚

双取代五氟苯酯-二聚乙二醇

I-PEG5-OH