3-[1-(2,4-dinitro-phenylhydrazono)-ethyl]-3H-benzofuran-2-one
2-(2-propionyloxy-benzyl)-benzofuran-3-carboxylic acid
2-(2-acetoxy-benzyl)-benzofuran-3-carboxylic acid
2-(2-methoxy-benzyl)-benzofuran-3-carboxylic acid
2-o-Hydroxybenzyl-benzofuran-3-carboxylat