6,10-dimethylundeca-5,9-dien-3-one

1-ethyl-3-(4-methylpent-3-enyl)cyclopent-3-en-1-ol

2-ethyl-7-hydroxy-5-methylchromen-4-one

1-(2,4-dimethoxy-6-methylphenyl)pentane-1,3-dione

2-苯基-3-氧代戊腈