Synonyms: 1,4:5,8-Dimethanonaphthalen-9-ol,1,2,3,4,10,10-hexachloro-6,7-epoxy-1,4,4a,5,6,7,8,8a-octahydro-, stereoisomer(8CI);9-(syn-Epoxy)hydroxy-1,2,3,4,10,10-hexachloro-6,7-epoxy-1,4,4a,5,6,7,8,8a-octahydro-1,4-endo-5,8-exo-dimethanonaphthalene;9-Hydroxy-HEOD; 9-syn-Hydroxy HEOD; WL 40231; syn-12-Hydroxydieldrin