1) 货号: PSB-4224; 2) 中文品名: 4-臂 聚乙二醇-对甲苯磺酸酯, 20k ; 3) 英文品名: 4-Arm PEG-Tosylate, 20k ; 4) 生产商: PEGWorks; 5) 描述: 4-Arm PEG-Tosylate is a multiarm PEG derivative with tosyl or toluenesulfonyl groups at each terminal of the four arms connected to one pentaerythritol core. Tosylate is a very good leaving group for neucleophilic substitution reaction. 4-Arm PEG-Mesylate or mesyl may be offered through custom synthesis.; 6) 规格: 1g 甄准免费