112483-26-8 2-Butyn-1-aminium, 4-(2-methyl-5-oxo-1-pyrrolidinyl)-N,N,N-trimethyl-, iodide 4-(2-Methyl-5-oxo-1-pyrrolidinyl)-N,N,N-trimethyl-2-butyn-1-aminium iodide N-(4-(Dimethylamino)-2-butynyl)-5-methyl-2-pyrrolidone methiodide