Used as an intermediate in the synthesis of certain pharmaceutical compounds, particularly in the development of beta-adrenergic receptor agonists. It plays a role in creating active ingredients found in medications for respiratory conditions, such as bronchodilators for asthma and chronic obstructive pulmonary disease (COPD). The compound's structure allows for selective modification to enhance drug efficacy and receptor specificity. Its hydrochloride form improves stability and solubility, which is beneficial in formulation processes.