2-Pyrazolin-5-one, 3-methyl-4-(p-phenetidinomethylene)-1-phenyl- 23711-48-0 3-Methyl-4-(p-phenetidinomethylene)-1-phenyl-2-pyrazolin-5-one 5-25-14-00510 (Beilstein Handbook Reference) BRN 0384994