Sodium Channel Inhibitor 1 is primarily used in research and medical applications to study and modulate the activity of sodium channels, which are critical for the transmission of electrical signals in nerve and muscle cells. It is employed in neuroscience to investigate the mechanisms of action potentials, neuronal excitability, and conditions related to sodium channel dysfunction, such as epilepsy, chronic pain, and certain cardiac arrhythmias. Additionally, this inhibitor serves as a valuable tool in drug development, helping to identify and test potential therapeutic agents targeting sodium channel-related disorders. Its precise inhibitory effects make it useful in electrophysiological studies to understand channel kinetics and pharmacology.