110714-10-8 133983-22-9 2-(3-(Benzo(1,4)dioxan-2-ylmethylamino)-1-propyl)-3(2H)-pyridazinone hydrochloride 3(2H)-Pyridazinone, 2-(3-(((2,3-dihydro-1,4-benzodioxin-2-yl)methyl)amino)propyl)-, monohydrochloride GKYI-12743 Gyki 12743