1,2-dihydroxy-epoxy-1,2,3,4-tetrahydro-5-methylchrysene [ 5-MeCDE,1,2-DETMC,5-MeC-1,2-diol-3,4-epoxide,5-methyl-1,2-dihydroxy-3,4-epoxy-1,2,3,4-tetrahydrochrysene,5-methylchrysene-1,2-dihydrodiol-3,4-epoxide,5-methylchrysene-1,2-diol-3,4-epoxide,anti-5-methylchrysene-1,2-dihydrodiol-3,4-epoxide,trans-1,2-dihydroxy-anti-3,4-epoxy-1,2,3,4-tetrahydro-5-methylchrysene ] 5-methyl group increases its carcinogenic activity