3-(2,2-二甲基丙基)-吡啶

3-nitro-4-(pyridin-1-ium-1-ylmethyl)benzonitrile,chloride

4-硝基苯甲酸酐

p-nitrobenzaldehyde p-nitrophenylhydrazone

1-undecylpyridin-1-ium,iodide