4-羟基-N-[6-(4-羟基丁酰基氨基)己基]丁酰胺

6-hydroxyhexan-3-one

1-(2-hydroxypropyl)pyrrolidin-2-one

4-(6-硝基-2-氧代-1,3-苯并噁唑)丁酸

1-(3,5-二甲基苯基)-4-羟基-1-丁酮