CH3COSH
CH3COSH is the chemical formula for thioacetic acid. It is an organosulfur compound that can be viewed as the sulfur analog of acetic acid, where the hydroxyl oxygen atom has been replaced by a sulfur atom. Thioacetic acid is a colorless liquid with a pungent odor. It is soluble in water and many organic solvents. The compound is relatively unstable and can decompose upon heating. It is often prepared through the reaction of acetic anhydride or acetyl chloride with hydrogen sulfide. Thioacetic acid serves as a reagent in organic synthesis, particularly as a source of the thioacetate group. It is used in the synthesis of various sulfur-containing organic compounds, including thiols and thioesters. Its reactivity stems from the nucleophilicity of the sulfur atom. Due to its unpleasant odor and potential instability, it is typically handled with care in a well-ventilated area.