ethyl 6-methoxy-2-methyl-4-oxo-1H-quinoline-3-carboxylate

2-氨基-1,6-二氢-6-氧代-4-嘧啶乙酸

3-acetyl-4-hydroxy-6-methyl-1H-quinolin-2-one

2-[2-(1,3-diethoxy-1,3-dioxopropan-2-ylidene)hydrazinyl]benzoic acid

1-(1-羟基-5,6,7,8-四氢萘-2-基)乙酮