1,2,3,4,10,10-hexachloro-6,7-epoxy-1,4,4a,5,6,7,8,8a-octahydro-1,4-endo-exo-518-dimethanonaphthalene; 1,2,3,4,10,10-hexachloro-6,7-epoxy-1,4,4a,5,6,7,8,8a-octahydro-1,4-endo,exo-5,8-dimethanonaphthalene; 1,2,3,4,10,10-hexachloro-6,7-epoxy-1,4,4a,5,6,7,8,8a-octahydroendo-exo-114:518-dimethanonaphthalene; 1,2,3,4,10,10-hexachloro-6,7-epoxy-1,4,4a,s,6,7,8,8a-octahydro-1,4-exo-5,8-endo-dimethanonaphthalene; 1,2,3,4,10,10-hexachloro-6,7-epoxy-1,4,4a,s,6,7,8,8a-octahydro-exo-l,4-endo-5,8-dimethanonaphthalene; 1,2,3,4,10,10-hexachloro,6,7-epoxy-1,4,4a,5,6,7,8,8a-octahydro-endo-1,4 - exo-5,8-dimethanonaphthalene; Compound 497; Endo-exo isomer of 1,2,3,4,10,10-hexachloro-617-epoxy-1,4,4a,5,6,7,8,8a-octahydro-1,4,5,8-dimethanonaphthalene; Ent 16,225; Heod; 2,7:3,6-Dimethanonaphth[2,3-b]oxirene, 3,4,5,6,9,9-hexachloro-1a,2,2a,3,6,6a,7,7a-octahydro-, (1aalpha,2beta,2aalpha,3beta,6beta,6aalpha,7beta,7aalpha).