106572-11-6 2(1H)-Quinolinone, 4-(3-((dimethylethyl)amino)-2-hydroxypropoxy)-1-methyl-, monohydrochloride 4-(3-((Dimethylethyl)amino)-2-hydroxypropoxy)-1-methyl-2(1H)-quinolinone monohydrochloride 4-(3-tert-Butylamino-2-hydroxypropoxy)-1-methyl-2(1H)-quinolinone hydrochloride