Used as a selective positive allosteric modulator of the M4 muscarinic acetylcholine receptor, this compound is primarily applied in neuroscience research to study cholinergic signaling pathways. It helps investigate the role of M4 receptors in regulating dopamine transmission, making it relevant in studies of schizophrenia, Parkinson’s disease, and substance use disorders. Due to its ability to enhance receptor specificity without directly activating it, it serves as a valuable tool for probing synaptic function and developing targeted CNS therapies.