Used as a key chiral intermediate in the synthesis of β-blocker pharmaceuticals, particularly in the production of (S)-propranolol and other cardioselective agents. Its enantiomeric purity is critical for achieving the desired biological activity in the final drug product. The presence of the chlorine and fluorophenoxy groups facilitates further chemical transformations, such as epoxide formation or nucleophilic substitution, enabling efficient route development in asymmetric synthesis. Widely employed in fine chemical and pharmaceutical industries for scalable, enantioselective manufacturing.