3(2H)-Pyridazinone, 4,5-dihydro-6-methyl-2-(2-(4-pyridyl)ethyl)- 3614-56-0 4,5-Dihydro-6-methyl-2-(2-(4-pyridyl)ethyl)-3(2H)-pyridazinone 5-24-01-00368 (Beilstein Handbook Reference) BRN 0882718 U-320