|Section2= |Section3= | Section8 = }} » For other uses of THT, see THT (disambiguation) Tetrahydrothiophene (also known as thiophane, tetramethylene sulfide, and thiolane) is a heterocyclic organic compound consisting of a five-membered ring containing four carbon atoms and a sulfur atom. It is the saturated analog of thiophene. It is a volatile, clear, colorless liquid with a strong unpleasant odor. Because of its smell, tetrahydrothiophene is occasionally used as an odorant in natural gas, in… (More on Tetrahydrothiophene)