Also Called: 1,4,5,6,7,7-hexachlorobicyclo [2,2,1]hept-5-ene-2,3-dicarboxylic anhydride chlorendic anhydride; 1,4,5,6,7,7-Hexachlorobicyclo [2.2.1]hept-5-ene-2,3-dicarboxylicanhydride chlorendic anhydride;4,7-methanoisobenzofuran-1,3-dione, 4,5,6,7,8,8-hexachloro-3a,4,7,7a-;4,7-Methanoisobenzofuran-1,3-dione, 4,5,6,7,8,8-hexachloro-3a,4,7,7a-tetrahydro-;1,4,5,6,7,7-hexachloro-8,9,10-trinorborn-5-ene-2,3-dicarboxylic anhydride (PE1+);Chlorendic anhydride;1,4,5,6,7,7-HEXACHLORO-ENDO-5-NORBORNENE-2,3-DICARBOXYLIC ANHYDRIDE