67737-62-6 CCRIS 2969 Phenanthro(3,4-b)oxirene-2,3-diol, 1a,2,3,9c-tetrahydro-, (1a-alpha,2-beta,3-alpha,9c-alpha)- anti-Phenanthrene-1,2-diol-3,4-epoxide syn-Phenanthrene-1,2-diol-3,4-epoxide