2-Hydroxy-6-oxo-cyclohex-1-enecarbonitrile

2,5-dioxo-1,6,7,8-tetrahydroquinoline-3-carboxamide

N-(2,5-dioxo-7,8-dihydro-6H-chromen-3-yl)benzamide

1-(4-fluorophenyl)-6,7-dihydro-5H-indazol-4-one