1a-alpha,2-alpha,3-beta,9c-alpha-Tetrahydrophenanthro(3,4-b)oxirene-2,3-diol 67694-87-5 CCRIS 2968 Phenanthro(3,4-b)oxirene-2,3-diol, 1a,2,3,9c-tetrahydro-, (1a-alpha,2-alpha,3-beta,9c-alpha)- anti-Phenanthrene-1,2-diol-3,4-epoxide syn-Phenanthrene-1,2-diol-3,4-epoxide