1,3-Dimethylcholanthrene 15,20-Dimethylcholanthrene 3-05-00-02499 (Beilstein Handbook Reference) 63041-61-2 BRN 3142099 Benz(j)aceanthrylene, 1,2-dihydro-1,3-dimethyl- Cholanthrene, 1,3-dimethyl-