17-Methyl-15,16-dihydro-17H-cyclopenta(a)phenanthrene 17H-Cyclopenta(a)phenanthrene, 15,16-dihydro-17-methyl- 3'-Methyl-1,2-cyclopentenophenanthrene 4-05-00-02433 (Beilstein Handbook Reference) 549-38-2 BRN 2450288 Diels' hydrocarbon