色酮-3-甲酸

1-氮杂呫吨酮

2-氨基-3-甲酰色酮

2-[(2-hydroxybenzoyl)methylene]-1,3,4,5-tetrahydroimidazole

3-chloro-2-methyl-5H-chromeno[2,3-b]pyridin-5-one