6-Methyl-3:4-benzphenanthrene , its cas register number is 2606-85-1. It also can be called 2-Methyl-3,4-benzophenanthrene ; 2-Methylbenzo(c)phenanthrene ; 4-05-00-02570 (Beilstein Handbook Reference) ; BRN 1872511 ; NSC 171295 .