3(2H)-Pyridazinone, 6-methyl-5-phenyl- 5-24-03-00473 (Beilstein Handbook Reference) 5-Phenyl-6-methyl-3(2H)-pyridazinone 6-Methyl-5-phenyl-3(2H)-pyridazinone 63795-91-5 BRN 0641318