Zinterol hydrochloride is primarily used in research settings to study beta-adrenergic receptors, particularly beta-2 adrenoceptors. It acts as a selective beta-2 adrenergic agonist, making it valuable for investigating bronchodilation mechanisms and smooth muscle relaxation. This compound is often utilized in experimental models to understand its effects on respiratory conditions, such as asthma, by mimicking the action of natural adrenergic agents. Additionally, it aids in exploring cardiovascular responses due to its influence on heart rate and blood pressure. Its application extends to pharmacological studies aiming to develop or improve treatments targeting beta-2 receptor pathways.