5-ethyl-4-methyl-hept-4-en-3-one

3,8-diethyldeca-4,6-diyne-3,8-diol

2,4-dimethylheptane-3,5-dione

2-ethyl-1,3-dimethylindole

1,1-二甲基-2-(1-乙基亚丙基)肼