1,2,3,4-Tetrahydrophenanthrene-3,4-epoxide 1,2,3,4-Tetrahydrophenanthro(3,4-b)oxirene 3,4-Epoxy-1,2,3,4-tetrahydrophenanthrene 66997-69-1 Phenanthrene, 3,4-epoxy-1,2,3,4-tetrahydro- Phenanthrenetetrahydro-3,4-epoxide Phenanthro(3,4-b)oxirene, 1,2,3,4-tetrahydro- Phenanthro(3,4-b)oxirene, 1a,2,3,9c-tetrahydro-