1-[2-[4-(dimethylamino)pyridin-1-ium-1-yl]ethyl]-N,N-dimethylpyridin-1-ium-4-amine,dibromide

methyl 4-(2-piperidin-1-ylethoxy)benzoate

1-溴乙基乙基碳酸酯

4-溴二苯并呋喃

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