1-acetyl-2-hydroxy-xanthen-9-one

2-(3-acetyl-4-hydroxy-phenoxy)-benzoic acid

3-hydroxy-6-phenoxyphthalic acid

4-hydroxy-7-phenoxy-2-benzofuran-1,3-dione

2-(2,5-二甲氧基苯甲酰基)苯基乙酸酯