C5H6S

The molecular formula C5H6S may refer to:


 * Methylthiophenes
 * 2-Methylthiophene, an organosulfur compound that can be produced by Wolff-Kishner reduction of thiophene-2-carboxaldehyde
 * 3-Methylthiophene, an organosulfur that can be produced by sulfidation of 2-methylsuccinate
 * Thiopyran, a heterocyclic compound