2827-28-3 5-21-09-00260 (Beilstein Handbook Reference) 7,8,9,10-Tetrahydro-7-oxo-benzo(c)phenanthridine 9,10-Dihydro-benzo(c)phenanthridin-7(8H)-one BENZO(c)PHENANTHRIDIN-7(8H)-ONE, 9,10-DIHYDRO- BRN 1537369