4-methoxy-5-methyl-3-nitro-2-pyridinecarboxylic acid

2,5-二甲基吡啶 1-氧化物

2,5-dimethyl-4-chloropyridine N-oxide

2,5-dimethyl-4-methoxy-3-nitropyridine

4-methoxy-5-methyl-3-nitro-2-pyridinemethanol