BRL 37344 sodium salt hydrate is widely used in pharmacological research as a selective β3-adrenergic receptor agonist. It is primarily employed to study the role of β3-adrenergic receptors in various physiological processes, particularly in metabolism and energy expenditure. Researchers use it to investigate its potential effects on lipolysis, thermogenesis, and glucose homeostasis, making it a valuable tool in obesity and diabetes-related studies. Additionally, it is utilized in experiments exploring its impact on smooth muscle relaxation, particularly in the bladder, to understand its therapeutic potential for overactive bladder syndrome. Its application extends to cardiovascular research, where its effects on heart rate and vascular tone are examined.