Pentathiepine is an organosulfur compound and sulfur heterocycle with the formula . Many derivatives are known, often with a benzo group (C<sub>6</sub>H<sub>4</sub>) in place of the alkene. Such compounds are derivatives of 1,2-benzenedithiol:
Substituted benzopentathiepines occur naturally in the form of varacin and the lissoclinotoxins.