4-(2-oxochromen-4-yl)chromen-2-one

4-(3-methylanilino)chromen-2-one

4-(4-氯苯胺)-2H-色烯-2-酮

3-氰基-4-甲基香豆素

1,3-dimethylchromeno[4,3-b]pyrrol-4-one