* Thioacetone (2-propanethione) A lightly studied organosulfur. Its smell is so potent it can be detected several hundred meters downwind mere seconds after a container is opened.
* Allyl thiol (2-propenethiol; allyl mercaptan; CH=CHCHSH) (garlic volatiles and garlic breath)
* (Methylthio)methanethiol (CHSCHSH), the "mouse thiol", found in mouse urine and functions as a semiochemical for female mice
* Ethanethiol, commonly called ethyl mercaptan (added to propane or other liquefied-petroleum gases used as fuel gases)
* 2-Methyl-2-propanethiol, commonly called tert-butyl mercaptan, is added as a blend of other components to natural gas used as fuel gas.
* Butane-1-thiol, commonly called butyl mercaptan, is a chemical intermediate.  
* Grapefruit mercaptan (grapefruit)
* Methanethiol, commonly called methyl mercaptan (after eating Asparagus)
* Furan-2-ylmethanethiol, also called furfuryl mercaptan (roasted coffee)
* Benzyl mercaptan (leek or garlic-like)