点击放大环状聚乙二醇-聚乙二醇臂-马来酰亚胺(n=96)580-crown-193-PEG96-Mal; Mal-terminated PEG arm on a cyclic poly(ethylene glycol) scaffold (arm n=96)
点击放大双臂-聚乙二醇-马来酰亚胺(n=96)2-Arm-PEG-Mal (n=96, per arm); 2-Arm Mal-functionalized discrete poly(ethylene glycol) (PEG arm n=96)
点击放大三臂-聚乙二醇-马来酰亚胺(n=96)3-Arm-PEG-Mal (n=96, per arm); 3-Arm Mal-functionalized discrete poly(ethylene glycol) (PEG arm n=96)
点击放大四臂-聚乙二醇-马来酰亚胺(n=96)4-Arm-PEG-Mal (n=96, per arm); 4-Arm Mal-functionalized discrete poly(ethylene glycol) (PEG arm n=96)