Thioacetic acid is a colorless liquid organic compound with the chemical formula C2H4OS. It is a thiol derivative of acetic acid, meaning it contains a sulfur atom in place of the oxygen atom found in traditional carboxylic acids. Thioacetic acid is primarily used in organic synthesis and can serve as a precursor for various chemical reactions. This compound has a strong, pungent odor and is soluble in water and organic solvents. Thioacetic acid is often utilized in the production of thioesters, which are important in biochemistry and industrial applications. Safety precautions are necessary when handling this compound due to its corrosive nature.