Furan derivatives

Furan derivatives contain furan, a five-membered aromatic heterocycle with four carbon atoms and one oxygen atom. Ring position and substitution define identity; 2-substituted, 3-substituted, 2,5-disubstituted and fused furans are not interchangeable. Tetrahydrofurans and furanones are separate structural families.

Defined furans serve as building blocks and reaction partners in synthetic chemistry, while selected furanic intermediates are studied in biomass conversion. These contexts do not establish one use or property for the class. Verify the full name, CAS number, formula, substitution pattern and structure. For an unlisted compound, provide an exact structure or identifier with your custom-synthesis enquiry.