7-甲氧基-2-甲基-咪唑并[1,2-a]吡啶-3-羧酸乙酯

2-[2-(1-chloro-2-ethoxy-2-oxoethylidene)hydrazinyl]benzoic acid

3-chloro-9-hydroxy-2-methylpyrido[1,2-a]pyrimidin-4-one

乙基2-甲基咪唑并[1,2-a]吡嗪-3-羧酸酯

3-chloro-2-methyl-4-oxo-4H-pyrazino<1,2-a>pyrimidine