1-(4-Methoxy)phenyl-3-methyl-5-pyrazolone 1-(para-Methoxy)phenyl-3-methyl-5-pyrazolone 3H-Pyrazol-3-one, 2,4-dihydro-2-(4-methoxyphenyl)-5-methyl- 60798-06-3 AI3-60003 PMPMP