4-isopropylamino-2,3-dimethyl-1-phenyl-3-pyrazolin-5-one

1,2-Dihydro-1,5-dimethyl-4-isopropylamino-2-phenyl-3H-pyrazol-3-one

1,5-diMethyl-2-phenyl-4-[(propan-2-yl)aMino]-2,3-dihydro-1H-pyrazol-3-one

1,2-Dihydro-1,5-dimethyl-4-[(1-methylethyl)amino]-2-phenyl-3H-pyrazol-3-one