(2,3-Dihydro-2-methyl-3-oxo-7-benzofuranyl)trimethylammonium iodide 31537-99-2 7-Trimethylammonium-2-methylcoumaran-3-one iodide AMMONIUM, (2,3-DIHYDRO-2-METHYL-3-OXO-7-BENZOFURANYL)TRIMETHYL-, IODIDE