(4-Dimethylcarbamoyloxybut-2-ynyl)trimethylammonium iodide 2-Butyn-1-aminium, 4-(((dimethylamino)carbonyl)oxy)-N,N,N-trimethyl-, iodide (9CI) 3854-12-4 Ammonium, (4-hydroxy-2-butynyl)trimethyl-, iodide, dimethylcarbamate