Caffeidine is primarily used in scientific research for its stimulant properties on the central nervous system. It serves as a reference compound in pharmacological studies exploring adenosine receptor antagonism, helping researchers understand mechanisms related to alertness, sleep regulation, and cognitive performance. Due to its structural similarity to caffeine, it is often employed in comparative studies to assess metabolic pathways and behavioral effects in animal models. Additionally, caffeidine finds use in analytical chemistry as a standard for detecting and quantifying stimulant compounds in biological samples. Its application remains largely confined to laboratory and experimental settings, with no widespread clinical or industrial use.