7-methoxy-2-phenyl-1-benzofuran-4-carbaldehyde

7-methoxy-2-pyridin-2-yl-1-benzofuran-4-carbaldehyde

7-methoxy-1,3-benzodioxole-4-carbaldehyde

5-溴-1,3-苯并二氧杂环戊二烯-4-甲醛

2,3-二甲氧基-6-溴苯甲酸