16219-99-1 4-Nitrosomethylaminopyridine 4-Pyridinamine, N-methyl-N-nitroso- (9CI) 5-22-14-00724 (Beilstein Handbook Reference) BRN 0472145 N-Methyl-N-nitroso-4-aminopyridine N-Nitroso-N-methyl-4-aminopyridine Pyridine, 4-(methylnitrosamino)- Pyridine, 4-nitrosomethylamino-