55165-34-9 5H-FURO(3,2-g)(1)BENZOPYRAN-5-ONE, 9-(3-ETHYLAMINO-2-HYDROXYPROPOXY)-4-HYDROXY-7 5H-Furo(3,2-g)(1)benzopyran-5-one, 9-(3-ethylamino-2-hydroxypropoxy)-4-hydroxy-7-methyl-, hydrochloride Furo(3,2-g)chromone, 9-(3-ethylamino-2-hydroxypropoxy)-4-hydroxy-7-methyl-, hydrochloride