What is 4-amino pyridine?

4-Amino Pyridine (4-AP) is a white crystalline solid and a derivative of pyridine. It is an organic compound with the chemical formula C5H6N2. 4-AP is commonly used as a neuroprotective agent and as a potassium channel blocker. It has been shown to improve neurologic function and enhance synaptic transmission in nerve cells. It is also used as a research tool in the study of nervous system function and disease. The compound is commercially available as a medication to treat multiple sclerosis, where it is used to improve motor function by enhancing nerve conduction. 4-AP has also shown efficacy in treating various neurological conditions such as spinal cord injuries, Lambert-Eaton myasthenic syndrome, and traumatic brain injuries. However, it must be used with caution due to its potential for neurotoxicity.