4,4'-(hexafluoroisopropylidene)diphthalic anhydride
2,2-bis(3,4-anhydrodicarboxyphenyl) hexafluoropropane; 6FDA; 2,2-Bis(3,4-anhydrodicarboxyphenyl)-hexafluoropropane(6FDA); 5,5'-(1,1,1,3,3,3-hexafluoropropane-2,2-diyl)bis(2-benzofuran-1,3-dione); 4,4'-(hexafluoroisopropylidene)diphthalic anhydride