Used in the synthesis of β-adrenergic receptor agonists, particularly in the development of bronchodilators for respiratory conditions such as asthma and chronic obstructive pulmonary disease (COPD). Its chiral structure makes it a valuable intermediate in producing enantiomerically pure active pharmaceutical ingredients. Commonly employed in drug manufacturing processes where the (S)-enantiomer contributes to higher biological activity and selectivity. Also utilized in research settings for structure-activity relationship studies of adrenergic drugs.