.gamma.-Aminopyridine 4 AP 4-AP 4-Aminopyridine 4-Pyridinamine 4-Pyridylamine 504-24-5 Amino-4 pyridine Avitrol Avitrol 200 Compound 1861 NSC15041 Phillips 1861 Pimadin (free base) Prc 1237 Pyridine, 4-amino- VMI 10-3 VMI-10-3 WLN: T6NJ DZ p-Aminopyridine