Synonyms: 1,3,4-Metheno-1H-cyclobuta[cd]pentalene,dodecachlorooctahydro- (7CI);1,3-Cyclopentadiene, 1,2,3,4,5,5-hexachloro-,dimer;Dechlorane;Dechlorane 4070;Dodecachlor;Dodecachlorooctahydro-1,3,4-metheno-2H-cyclobuta[cd]pentalene;Dodecaclor;ENT25719;GC 1283;Hexachlorocyclopentadiene dimer;Mirex;NSC 124102;NSC 26107;NSC 37656;Paramex;Perchlorodihomocubane;Perchloropentacyclo[5.2.1.02,6.03,9.05,8]decane;Perchloropentacyclo[5.3.0.02,6.03,9.04,8]decane;Perchloropentacyclodecane;