4-methyl-1-[2-(4-methylpyridin-1-ium-1-yl)ethyl]pyridin-1-ium,bromide

benzyltri(2-(4-methylpyridyl))phosphonium bromide

4-methyl-1-(4-nitrophenethyl)pyridin-1-ium bromide

2-丁炔-1-醇

氢氰酸