2-ethyl-6-methylpyridin-3-amine

2-甲基-5-硝基吡啶

2-ethyl-6-methyl-3-nitropyridine 1-oxide

2-methyl-5-nitro-1-oxidopyridin-1-ium

(5-硝基吡啶-2-基)丙二酸二乙酯