1-(p-Tolyl)-3-methyl-5-pyrazolone 2-Pyrazolin-5-one, 3-methyl-1-(4-methylphenyl)- 2-Pyrazolin-5-one, 3-methyl-1-p-tolyl- 3-Methyl-1-p-tolyl-5-pyrazolone 3-Methyl-1-p-tolyl-pyrazolin-5-one 3H-Pyrazol-3-one, 2,4-dihydro-5-methyl-2-(4-methylphenyl)- 86-92-0 BRN 0610651 EINECS 201-708-4