3535-75-9 4-Aminopyridine 1-oxide 4-Pyrimidinamine 1-oxide 5-22-09-00111 (Beilstein Handbook Reference) BRN 0107584 EINECS 222-569-6 NSC 351983 PYRIDINE, 4-AMINO-, 1-OXIDE Phillips 1863 Pyridin-4-amine 1-oxide Pyridine, 4-amino-, N-oxide