3,4-dimethyl-1-phenylpyrazol-5-one, 1-phenyl-3,4-dimethyl-2-pyrazolin-5-one, EINECS 241-844-1, 4,5-dimethyl-2-phenyl-1,2-dihydro-pyrazol-3-one, 2,4-dihydro-4,5-dimethyl-2-phenyl-3H-pyrazol-3-one, HMS1529G03, 3,4-Dimethyl-1-phenyl-2-pyrazolin-5-one, 3,4-dimethyl-1-phenyl-pyrazolin-5-one, 4-methyl-2,4-dihydro-5-methyl-2-phenyl-3H-pyrazol-3-one