1004-36-0 2,6-dimethyl-4H-pyran-4-one 2,6-dimethyl-4H-pyran-4o-one 4H-pyran-4-one, 2,6-dimethyl- InChI=1/C7H8O2/c1-5-3-7(8)4-6(2)9-5/h3-4H,1-2H