DescriptionFuran-2D-numbered.svg Skeletal formula of the furan molecule, a five-membered aromatic heterocycle with four carbons to one oxygen. The numbering convention
DescriptionFuran-3-carboxylic-acid-2D-skeletal.svg Skeletal formula of furan-3-carboxylic acid. CAS® Registry Number: 488-93-7 Image generated in ChemDraw
DescriptionFuran-2-carboxylic-acid-2D-skeletal.svg Skeletal formula of furan-2-carboxylic acid. CAS® Registry Number: 88-14-2 Image generated in ChemDraw