Used primarily as a selective antagonist for adenosine A1 receptors in scientific research. Helps investigate the role of adenosine receptors in physiological processes such as cardiac function, renal blood flow, and central nervous system activity. Commonly employed in studies related to neurotransmission, ischemia, and heart rate regulation. Due to its specificity, it is valuable in experiments aiming to differentiate A1 receptor effects from other adenosine receptor subtypes. Also used in pharmacological assays to modulate receptor activity and assess downstream signaling pathways.