1,2-Dihydro-1,2-dihydroxybenz(a)anthracene 1,2-Dihydrobenz(a)anthracene-1,2-diol 60839-20-5 Benz(a)anthracene-1,2-dihydrodiol Benz(a)anthracene-1,2-diol Benz(a)anthrene-1,2-dihydrodiol Benzanthracene-1,2-dihydrodiol