2-Pyrazolin-5-one, 4-anilinomethylene-3-methyl-1-phenyl- 3H-Pyrazol-3-one, 2,4-dihydro-5-methyl-2-phenyl-4-((phenylamino)methylene)- 4-Anilinomethylene-3-methyl-1-phenyl-2-pyrazolin-5-one 4173-73-3