7,12-Dimethylbenz(a)anthracene-3,4-dihydrodiol 72617-60-8 Benz(a)anthracene-3,4-diol, 3,4-dihydro-7,12-dimethyl- DMBA-3,4-diol trans-3,4-Dihydro-7,12-dimethylbenz(a)anthracene-3,4-diol