Used in the synthesis of β-adrenergic receptor agonists, particularly in the production of bronchodilators for treating respiratory conditions such as asthma and chronic obstructive pulmonary disease (COPD). Its chiral structure makes it a valuable intermediate in asymmetric synthesis, ensuring high enantioselectivity in active pharmaceutical ingredients. Commonly employed in the preparation of drugs like salmeterol and formoterol, where the (R)-enantiomer contributes significantly to biological activity and receptor specificity.