4-oxopyrano[3,2-b][1]benzofuran-2-carboxylic acid

(2-acetyl-1-benzofuran-3-yl) acetate

3-(1-Chlor-1-dimethylamino)-methyl-4H-<1>benzofuro<3,2-b>pyran-4-on

Oxo-(4-oxo-4H-benzo[4,5]furo[3,2-b]pyran-3-yl)-acetic acid ethyl ester

4-Oxo-4H-<1>benzofuro<3,2-b>pyran-3-carbonitril