N-甲基乙酰基乙酰胺

Ethyl 6-methyl-2-oxo-4-phenyl-1,2,3,4-tetrahydro-5-pyrimidinecarb oxylate

(2-methoxy-2-oxoethyl) 3-oxobutanoate

N-环己基乙酰基乙酰胺

3-oxo-N-(pyridin-2-ylmethyl)butanamide