Used in scientific research to study the central nervous system, particularly as a selective agonist for muscarinic acetylcholine receptors. Helps in investigating cholinergic pathways involved in memory, learning, and neurodegenerative diseases like Alzheimer's. Also utilized in pharmacological assays to evaluate receptor binding and signal transduction mechanisms. Due to its ability to cross the blood-brain barrier, it serves as a tool compound in neuropharmacology studies.