Synonyms: 2,5-Methano-2H-indeno[1,2-b]oxirene,2,3,4,5,6,7,7-heptachloro-1a,1b,5,5a,6,6a-hexahydro-, (1aa,1ba,2b,5b,5aa,6a,6aa)-;4,7-Methanoindan,1,4,5,6,7,8,8-heptachloro-2,3-epoxy-3a,4,7,7a-tetrahydro-, endo,endo- (8CI);Heptachlor endo-epoxide;Heptachlor epoxide A;Heptachlor trans-oxide;trans-Heptachlor epoxide;