M8-B hydrochloride is primarily utilized in research settings, particularly in neuroscience and pharmacology studies. It serves as a selective antagonist for certain receptors, aiding in the investigation of receptor functions and signaling pathways. This compound is valuable in understanding the mechanisms of neurological disorders and developing potential therapeutic agents. Additionally, it is used in experimental models to study the effects of receptor modulation on behavior and cellular responses, contributing to advancements in drug discovery and neurobiological research.