(2-(p-Methylsulfonylphenyl)imidazo(1,2-a)pyrid-3-ylmethyl)trimethylammonium iodide 3441-47-2 Ammonium, (2-(p-methylsulfonylphenyl)imidazo(1,2-a)pyrid-3-ylmethyl)trimethyl-, iodide