Chemical Formula: C4H7O2S

3-S-methylmercaptopropionate

C4H7O2S (119.0167)

3-s-methylmercaptopropionate, also known as 3-methylthiopropionic acid or 3-(methylsulfanyl)propanoic acid, is a member of the class of compounds known as straight chain fatty acids. Straight chain fatty acids are fatty acids with a straight aliphatic chain. 3-s-methylmercaptopropionate is soluble (in water) and a weakly acidic compound (based on its pKa). 3-s-methylmercaptopropionate can be found in a number of food items such as other bread, italian sweet red pepper, triticale, and pot marjoram, which makes 3-s-methylmercaptopropionate a potential biomarker for the consumption of these food products.