3-(1,3-benzothiazol-2-yl)chromen-2-one

N-(2-aminophenyl)-2-oxochromene-3-carboxamide

2-oxo-N-(4-sulfamoylphenyl)chromene-3-carboxamide

3-(1H-benzimidazol-2-yl)chromen-2-one

丙二酰肼