1,3-Isobenzofurandione, 5,5'-(2,2,2-trifluoro-1-(trifluoromethyl)ethylidene)bis- 1107-00-2 144423-35-8 163915-35-3 2,2'-Bis(3,4-dicarboxyphenyl)hexafluoropropane dianhydride 215233-32-2 4,4'-(2,2,2-Trifluoro-1-(trifluoromethyl)ethylidene)diphthalic anhydride 4,4'-(Hexafluoroisopropylidene)bis(phthalic anhydride) EINECS 214-170-0