110766-29-5 3(2H)-Pyridazinone, 4,5-dihydro-6-(4-aminophenyl)-5-(hydroxymethyl)- 4,5-Dihydro-6-(4-aminophenyl)-5-(hydroxymethyl)-3(2H)-pyridazinone 6-(4-Aminophenyl)-5-(hydroxymethyl)-4,5-dihydro-3(2H)-pyridazinone