点击放大四臂-聚乙二醇-巯基(n=16)4-Arm-PEG16-SH; 4-Arm thiol-functionalized discrete poly(ethylene glycol) (PEG arm n=16)
点击放大Y型-双臂-甲氧基-聚乙二醇-NHS活性酯(n=16)Y-(mPEG16)2-NHS; Y-shaped bis(methoxy-poly(ethylene glycol)) with a single N-hydroxysuccinimide ester conjugation handle (PEG arm n=16)
点击放大Y型-双臂-甲氧基-聚乙二醇-马来酰亚胺(n=16)Y-(mPEG16)2-Mal; Y-shaped bis(methoxy-poly(ethylene glycol)) with a single Mal conjugation handle (PEG arm n=16)