71368-30-4 9-((4-Aminobutyl)ethylamino)-2,3-dihydrobenzo(f)phthalazine-1,4-dione 9-(N-(4-Aminobutyl)-N-ethyl)aminobenzo(f)phthalazine-1,4-(2H,3H)dione ABEN Benzo(f)phthalazine-1,4-dione, 9-((4-aminobutyl)ethylamino)-2,3-dihydro-