4-aminopyridine

Patent Pending 4-Aminopyridine (4-AP, INN fampridine, USAN dalfampridine) is an organic compound with the chemical formula C5H4N–NH2. The molecule is one of the three isomeric amines of pyridine. It is used primarily as a research tool, in characterizing subtypes of potassium channel, and has also been used to manage some of the symptoms of multiple sclerosis,[1][2] and is indicated for symptomatic improvement of walking in adults with several variations of the disease.