S107 hydrochloride is primarily used in research settings to study its effects on calcium handling in muscle cells, particularly in the context of heart failure and muscle fatigue. It functions as a stabilizer of the ryanodine receptor, which plays a crucial role in regulating calcium release in muscle cells. By modulating this receptor, it helps to prevent calcium leakage, which is beneficial in improving cardiac function and reducing muscle weakness. This compound has shown potential in preclinical studies for treating conditions like heart failure, arrhythmias, and skeletal muscle disorders. Its application is also being explored in understanding and managing stress-related cardiac complications.