5-phenyl-2,4-dihydro-3H-pyrazol-3-one, 5-PHENYL-2,4'-BIPYRIDINE, 5-ph-2,4'-bpy, 5-hydroxy-3-phenyl-1H-pyrazole, 5-phenyl-2,4-dihydropyrazol-3-one, 3-phenyl-1H-pyrazolin-5-one
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