Synonyms: Aceticacid, difluoro[1,1,2,2-tetrafluoro-2-(trifluoromethoxy)ethoxy]-, methyl ester(9CI);Methyl perfluoro-3,6-dioxaheptanoate;Methyl perfluoro-3,6-dioxaheptanoic acid;methyl 2,2-difluoro-2-(1,1,2,2-tetrafluoro-2-(trifluoromethoxy)ethoxy)acetate;