2,7-Bis(3-(dimethylamino)propyl)benzo(lmn)(3,8)phenanthroline-1,3,6,8(2H,7H)-tetrone dihydrobromide 81253-99-8 Benzo(lmn)(3,8)phenanthroline-1,3,6,8(2H,7H)-tetrone, 2,7-bis(3-(dimethylamino)propyl)-, dihydrobromide