1-(azepan-1-yl)butane-1,3-dione

2,6-dimethyl-4-oxo-N,1-diphenylpyridine-3-carboxamide

2-氰基乙酰乙酸乙酯

cyclopentyl 3-oxobutanoate

2-氨基-6-甲基-4-氧代-4H-吡喃-3-甲腈