(E)-3-甲基戊-2-烯-4-炔-1-醇

1-戊烯-3-酮

2,2-dimethyl-5-oxo-heptanoic acid methyl ester

2,4,4-三甲基-1,3-环己烷二酮

5-(2,6,6-trimethyl-3-oxocyclohexen-1-yl)-3-methyl-2-trans-penten-4-yn-1-ol