英文别名2-[2-[2-[carboxy(difluoro)methoxy]-1,1,2,2-tetrafluoroethoxy]-1,1,2,2-tetrafluoroethoxy]-2,2-difluoroacetic acid; Perfluoro-3,6,9-trioxaundecane-1,11-dioic acid; Perfluoro-3,6,9-trioxaundecane-1,11-dioc acid; PERFLUORO-3,6,9-TRIOXAUNDECANT-1,11-DIOIC ACID; Acetic acid,2,2'-[oxybis[(1,1,2,2-tetrafluoro-2,1-ethanediyl)oxy]]bis[2,2-difluoro-]