2,5-二羟基-3,6-二甲基环己-2,5-二烯-1,4-二酮

5,8-dimethyl-2,3-dihydro-1,4-benzodioxine

6,9-dimethyl-3,4-dihydro-2H-1,5-benzodioxepine

4,7-dimethyl-1,3-benzodioxole-5-carbaldehyde

5,8-dimethyl-2,3-dihydro-1,4-benzodioxine-6-carbaldehyde