Diantipyrylmethane, 4,4'-Methylenebis(1,2-dihydro-1,5-dimethyl-2-phenyl-3H-pyrazol-3-one), 4,4'-Methylenediantipyrine monohydrate, 4-[(1,5-dimethyl-3-oxo-2-phenylpyrazol-4-yl)methyl]-1,5-dimethyl-2-phenylpyrazol-3-one, Di-(1-phenyl-2,3-dimethylpyrazolon-5-yl)methane, 4,4'-Diantipyrylmethane Monohydrate, 4,4'-Methylenebis(1,5-dimethyl-2-phenyl-1H-pyrazol-3(2H)-one)