2,3-Dihydro-4-hydroxy-2-(1-hydroxy-1-methylethyl)-7-methyl-5H-furo(3,2-g)(1)benzopyran-5-one 492-52-4 5H-Furo(3,2-g)(1)benzopyran-5-one, 2,3-dihydro-4-hydroxy-2-(1-hydroxy-1-methylethyl)-7-methyl-