2,7-Dimethyl-4,5,7,8-tetrahydro-pyrano(4,3-b)pyran-4,5-dione 43053-00-5 4H,5H-Pyrano(4,3-b)pyran-4,5-dione, 7,8-dihydro-2,7-dimethyl- 5-19-05-00073 (Beilstein Handbook Reference) 7,8-Diidro-2,7-dimetil-4H,5H-pirano(4,3-b)pyran-4,5-dione [Italian] BRN 1371963