2-乙基苯丁酮

N-butyl-2-ethyl-N-(4-methyl-1,3-oxazol-2-yl)butanamide

4-bromo-4-ethyl-2,2-dimethylhexan-3-one

3-ethyl-3,5,5-trimethylheptan-4-one

3-乙基-2-戊酮