a colorless toxic flammable liquid used in the synthesis of nylon

a colorless liquid prepared from wood tar and used a solvent for resins and plastics, or as a tanning agent.

Furan, also known as furane and furfuran, is a heterocyclic organic compound, produced when wood, especially pine-wood, is distilled. Furan is a clear, colorless, very volatile and highly flammable liquid with a boiling point close to room temperature. It is toxic and may be carcinogenic.

Polychlorinated dibenzofuran (PCDF).

A hetero- aromatic. See also THF.