(-)-2,3-Dihydro-2-isopropenyl-5-methylbenzo(1,2-b:5,4-b')difuran-4,8-dione 27304-02-5 BENZO(1,2-b:5,4-b')DIFURAN-4,8-DIONE, 2,3-DIHYDRO-2-ISOPROPENYL-5-METHYL-, (-)- Benzo(1,2-b:5,4-b')difuran-4,8-dione, 2,3-dihydro-5-methyl-2-(1-methylethenyl)-, (-)- (9CI) Dihydrocyperaquinone