(2-Carboxy-2-methylpropyl)trimethylammonium iodide ester with choline iodide 109042-63-9 AMMONIUM, (2-CARBOXY-2-METHYLPROPYL)TRIMETHYL-, IODIDE, ESTER with CHOLINE IODID Ammonium, (2-carboxy-2-methylpropyl)trimethyl-, iodide, ester with choline iodide