N-(1-氧代丁基)甘氨酸

3-氧代己酸甲酯

N-(4-氨基-苯基)丁酰胺

4-(2-butanoylhydrazinyl)-4-oxo-N-(5-propyl-1,3,4-thiadiazol-2-yl)butanamide

N-(7-hydroxy-4-methyl-2-oxochromen-6-yl)butanamide