Furan vs. Oxole — What's the Difference?

Furan is a heterocyclic organic compound, consisting of a five-membered aromatic ring with four carbon atoms and one oxygen atom. Chemical compounds containing such rings are also referred to as furans.

(organic compound) furan

A colorless, volatile, heterocyclic organic compound, C4H4O, obtained from wood oils and used primarily in organic synthesis. Also called furfuran.

Any of various derivatives of this compound.

(organic compound) Any of a class of aromatic heterocyclic compounds containing a ring of four carbon atoms, two double bonds and an oxygen atom; especially the simplest one, C₄H₄O.

A colorless toxic flammable liquid used in the synthesis of nylon