1-甲基-5-氧代-4H-吡唑-3-羧酸乙酯

3-甲基氨基-3,4-二氢喹唑烷-4-酮

6-chloro-2-methyl-3-(methylamino)quinazolin-4-one

2-methylphthalazin-1-one

5-cyclohexyl-2-methyl-4H-pyrazol-3-one