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(S)-2-(methylamino)-3-phenylpropanoic acid; CAS No.: 2566-30-5; (S)-2-(methylamino)-3-phenylpropanoic acid. PROPERTIES: (S)-2-(methylamino)-3-phenylpropanoic acid is a chiral amino acid derivative with a melting point of approximately 142-145 C. This compound exhibits moderate solubility in water and is slightly soluble in organic solvents like ethanol and methanol. Its molecular formula is C10H13NO2, and it has a molecular weight of 179.21 g/mol. The compound should be stored in a cool, dry place away from heat and direct sunlight, preferably at temperatures below 20 C in a tightly sealed container. Safety precautions include wearing protective gloves, eye protection, and avoiding inhalation of dust. It is classified as a Xi (irritant) substance according to EU regulations. APPLICATIONS: (S)-2-(methylamino)-3-phenylpropanoic acid serves as a key intermediate in the synthesis of beta-blockers, particularly in the production of propranolol and related cardiovascular agents. Its chiral center is crucial for the biological activity of these pharmaceuticals. Additionally, this compound is used in the preparation of peptide mimetics due to its structural similarity to natural amino acids. In analytical chemistry, it functions as a chiral derivatizing agent for the separation of amino acids via HPLC, as described in the Journal of Chromatography. The compound also finds application in the study of enzyme inhibition mechanisms, particularly in research related to angiotensin-converting enzyme (ACE) inhibitors, as reported in Bioorganic & Medicinal Chemistry Letters.