Furan definition

A colorless, volatile, heterocyclic organic compound, C₄ H₄ O, obtained from wood oils and used primarily in organic synthesis.

Any of various derivatives of this compound.

A colorless, liquid heterocyclic compound, C₄H₄O, prepared from wood tar or furfural, and used in organic synthesis.

Any of a group of colorless, volatile, organic compounds containing a ring of four carbon atoms and one oxygen atom. Furans are obtained from wood oils and used in the synthesis of many organic compounds.

The simplest such compound, consisting of a furan ring with two double bonds and attached to four hydrogen atoms. Chemical formula: C₄H₄O.