3-Methylpyridine N-oxide1003-73-232 % similar 4-Methylpyridine N-oxide1003-67-432 % similar 4-Phenylpyridine 1-oxide1131-61-931 % similar 3,4-Dimethoxy-2-methylpyridine N-oxide72830-07-031 % similar N,N,N',N'-Tetramethyl-S-(1-oxido-2-pyridyl)thiuronium hexafluorophosphate212333-72-730 % similar N,N,N',N'-Tetramethyl-S-(1-oxido-2-pyridyl)thiouronium Tetrafluoroborate255825-38-830 % similar 2,3,5-Trimethylpyridine 1-oxide74409-42-030 % similar