2-Trimethylammoniummethyl methylphosphonofluoridate iodide 2797-10-6 Ammonium, (2-(methylphosphonofluoridyl)ethyl)trimethyl-, iodide Ammonium, (2-hydroxyethyl)trimethyl-, iodide, methylphosphonofluoridate Choline, iodide, methylphosphonofluoridate Methyl fluorophosphoryl choline iodide