2-(4-oxo-4H-[1]benzopyran-3-yl) [1] benzopyrano[3,2-e]pyrimidin-5(5H)-one

3-乙酰基-2-甲基-5H-[1]苯并吡喃并[2,3-b]吡啶-5-酮

1,2-dimethyl-5-phenyl-1H-pyrrole-3-carbonitrile

水杨酸

2-amino-3-(hydroxyiminomethyl)chromen-4-one