2,3-Dimethyl-6-(1-hydroxy-2-((1-methylethyl)amino)ethyl)-4H-1-benzopyran-4-one hydrochloride 34604-31-4 4H-1-Benzopyran-4-one, 2,3-dimethyl-6-(1-hydroxy-2-((1-methylethyl)amino)ethyl)-, hydrochloride