(2-羟基苯基)(异噁唑-4-基)甲酮

2-amino-4-oxochromene-3-carbonitrile

2-aminochromeno[4,3-d]pyrimidin-5-one

(2-羟基苯基)-1H-吡唑-4-基甲酮

2-氨基-4氢-色烯-4-酮