1 8AD 9-amino-(N-(2-dimethylamino)butyl)acridine-4-carboxamide 1.000 2 7AD 9-amino-N-[3-(dimethylamino)propyl]acridine-4-carboxamide 0.750 3 9AD 9-amino-(N-(2-dimethylamino)ethyl)acridine-4-carboxamide 0.714