8-hydroxy-3,3-dimethyl-2,4-dihydrodibenzofuran-1-one

3,3,9,9-tetramethyl-3,4,9,10-tetrahydrobenzo<1,2-b:4,5-b'>bis(benzofuran-1,7(2H,8H)-dione)

2-(苯氧基甲基)-1,4-苯醌

5-羟基-1,3-苯并氧硫杂环戊烷-2-酮

3-Nitro-2-phenylamino-benzofuran-5-ol