DCPIB is primarily used in research settings to study ion channels, particularly volume-regulated anion channels (VRACs). It acts as a potent inhibitor of these channels, making it a valuable tool for understanding cellular mechanisms related to ion transport and cell volume regulation. Researchers utilize DCPIB to investigate its effects on conditions such as ischemia, stroke, and cancer, where VRACs play a significant role. Its application extends to exploring potential therapeutic strategies targeting these channels in various diseases. Additionally, DCPIB is employed in electrophysiological studies to dissect the roles of anion channels in cellular physiology and pathology.