n-Dodecyl mercaptan, also known as lauryl mercaptan or dodecanethiol, is an organic compound with the chemical formula C12H26S. It is a colorless liquid with a strong, characteristic odor. It is used as a raw material for the production of fragrances, as well as in the manufacture of other chemicals such as insecticides, fungicides, and plasticizers. It is also used as a reagent in organic synthesis.