1H-2-Benzopyran-1-one, 3,4-dihydro-3,8-dihydroxy-3-methyl- 3-Methyl-3,8-dihydroxy-3,4-dihydroisocoumarin 30888-05-2 BRN 3049810 Isocoumarin, 3,4-dihydro-3,8-dihydroxy-3-methyl-