(2-Mercaptoethyl)trimethylammonium iodide butyrate 1866-16-6 Ammonium, (2-mercaptoethyl)trimethyl-, iodide, butyrate Butyrylthiocholine iodide Ethanaminium, N,N,N-trimethyl-2-[(1-oxobutyl)thio]-, iodide NSC91564