2-甲基-4-乙基-6-羟基嘧啶

5-乙基-3(2H)-异噁唑酮

3-氧代戊酸酰胺

2-(dimethylamino)-6-ethyl-1,3-oxazin-4-one

2-(diethylamino)-6-ethyl-1,3-oxazin-4-one