2-Methyl-1-propanethiol is primarily used as an odorant additive in natural gas and liquefied petroleum gas (LPG) to impart a detectable smell for leak detection and safety purposes, owing to its strong, distinctive sulfurous odor. It is also employed in the synthesis of flavors and fragrances. Additionally, it serves in the production of certain pesticides and herbicides, where its sulfur-containing structure enhances effectiveness. In industrial settings, it acts as a chemical intermediate in the manufacture of other organic compounds. Furthermore, it is utilized in research laboratories for studying sulfur-containing organic molecules and their reactions.