(S)-O-Acetylmandelic acid (Cat No.: R050371) is a chiral organic compound derived from (S)-mandelic acid, where the hydroxyl group is acetylated. With the molecular formula C₁₀H₁₀O₄, it features an aromatic ring, a carboxylic acid group, and an acetoxy group on a stereocenter, giving it enantiomeric purity. This compound serves as a valuable intermediate in asymmetric synthesis, particularly in the pharmaceutical industry for producing optically active drugs. Its defined stereochemistry is crucial in designing enantioselective reactions and studying biological activity in chiral environments.