Synonyms: 3-Methyl-11,12-epoxy-1,2-dihydrobenz[j]aceanthrylene;11,12-Epoxy-3-methylcholanthrene;3-Methylcholanthrene-11,12-epoxide;Benz(7,8)aceanthryleno(9,10-B)oxirene, 1A,11C-dihydro-9-methyl-;Benz(7,8)aceanthryleno(9,10-B)oxirene, 3-methyl-;Cholanthrene, 3-methyl-11,12-epoxy-;Mca-11,12-epoxide;Mca-11,12-oxide