Drobuline hydrochloride is primarily used in medical research and pharmaceutical applications, particularly in the study of cardiovascular diseases. It acts as a beta-adrenergic blocking agent, which helps in understanding the mechanisms of heart function and the effects of beta-blockers on cardiac tissue. This compound is often utilized in experimental models to investigate its potential therapeutic effects on conditions such as hypertension, arrhythmias, and other heart-related disorders. Its role in modulating heart rate and blood pressure makes it a valuable tool for developing new treatments and improving existing cardiovascular therapies.