3-<<4-(dimethylamino)phenyl>methyl>-4-hydroxy-2H-1-benzopyran-2-one

4-hydroxy-3-methoxychromen-2-one

1 3-二氢-4-(2-羟基苯基)-2H-1,5-苯并二氮杂革-2-酮

4-氨基-苯并吡喃-2-酮

2'-羟基苯乙酮