4-(2-pyridin-4-ylethyl)aniline

4-(2-piperidin-4-ylethyl)piperidine

4-(3-溴丙基)吡啶氢溴酸

ethyl 2-(4-methylpyridin-1-ium-1-yl)acetate,bromide

1,4-dimethylpyridin-1-ium,chloride