英文别名Boc-PEG4-C2-NHS ester; tert-butyl 3-[2-[2-[2-[3-(2,5-dioxopyrrolidin-1-yl)oxy-3-oxopropoxy]ethoxy]ethoxy]ethoxy]propanoate; t-Butoxycarbonyl-PEG4-NHS ester; OtBu-PEG4-SPA; 1-tert-Butyl 16-(2,5-Dioxopyrrolidin-1-yl) 4,7,10,13-Tetraoxahexadecane-1,16-dioate; NHS ester-PEG3-t-butyl ester; 4,7,10,13-Tetraoxahexadecanedioic acid, 1-(1,1-dimethylethyl) 16-(2,5-dioxo-1-pyrrolidinyl) ester