1-Azaphenanthrene 5,6-BENZOQUINOLINE 5,6-Benzo(f)quinoline 5-20-08-00220 (Beilstein Handbook Reference) 85-02-9 BRN 0120261 Benzo(f)quinoline CCRIS 800 EINECS 201-582-0 NSC 9850 beta-Naphthoquinoline