In organosulfur chemistry, 1,2-dithioles are a type of heterocycles. The parent of this class of compounds is 1,2-dithiacyclopentene. The anticancer drug oltipraz is a dithiole. Trithiapentalene is an example of theoretical interest.
Many 1,2-dithioles are 1,2-dithiol-3-thiones.