1463-95-2 2-(2-((5-Bromo-2-pyridyl)amino)vinyl)-1-ethyl-6-methylpyridinium iodide EINECS 215-976-5 Pyridinium, 2-(2-((5-bromo-2-pyridinyl)amino)ethenyl)-1-ethyl-6-methyl-, iodide Quaternium-51