Furan-2-ylmethanethiol (2-furanmethanethiol) is an organic compound containing a furan substituted with a sulfanylmethyl group.

It is a clear colourless liquid when pure, but it becomes yellow coloured upon prolonged standing.

It possesses a strong odour of roasted coffee and a bitter taste.

It has been identified as a trigger molecule for parosmia following COVID-19 infection.

[1][2] Furan-2-ylmethanethiol is easily prepared by reacting furfuryl alcohol with thiourea in hydrochloric acid via an intermediate isothiouronium salt which is hydrolized to the thiol by heating with sodium hydroxide.