Used as a chiral building block in the synthesis of biologically active compounds, particularly in the preparation of pharmaceuticals with beta-adrenergic blocking activity. Its functional groups allow for sequential substitution reactions, enabling the construction of complex molecules with high stereochemical control. Commonly employed in the production of adrenergic agents like (R)-propranolol and related beta-blockers. The presence of both benzyloxy and tosyloxy groups provides selective reactivity, making it valuable in multi-step organic syntheses where regioselectivity and enantiomeric purity are critical.