mAChR-IN-1 hydrochloride is primarily used in research settings to study the role of muscarinic acetylcholine receptors (mAChRs) in various physiological and pathological processes. It acts as a selective inhibitor of these receptors, making it a valuable tool for understanding their function in the central and peripheral nervous systems. Researchers utilize this compound to investigate conditions such as Alzheimer's disease, Parkinson's disease, and schizophrenia, where mAChRs are implicated. It is also employed in pharmacological studies to explore potential therapeutic targets for treating cognitive disorders, smooth muscle dysfunction, and other mAChR-related conditions. Additionally, mAChR-IN-1 hydrochloride aids in the development of new drugs by providing insights into receptor mechanisms and signaling pathways.