4-(isopropylamino)-1,5-dimethyl-2-phenyl-1H-pyrazol-3(2H)-one hydrochloride; 1,2-Dihydro-1,5-dimethyl-4-[(1-methylethyl)amino]-2-phenyl-3H-pyrazol-3-one Hydrochloride; 4-(Isopropylamino)antipyrine Hydrochloride; 1-Phenyl-2,3-dimethyl-4-isopropylaminopyrazolone Hydrochloride; 4-(Isopropylamino)phenazone Hydrochloride; 4-Isopropylamino-2,3-dimethyl-1-phenyl-3-pyrazolin-5-one Hydrochloride; 4-Monoisopropylamino-1-phenyl-2,3-dimethyl-5-pyrazolone Hydrochloride; Isopirina Hydrochloride; Isopropylaminophenazone Hydrochloride; Isopyrin Hydrochloride; Isopyrine Hydrochloride