135288-72-1 4-(2-(4-(Dipentadecylamino)phenyl)ethenyl)-1-methylpyridinium iodide Dpdasp N,N-Dipentadecylaminostyrylpyridinium N,N-Dipentadecylaminostyrylpyridinium iodide Pyridinium, 4-(2-(4-(dipentadecylamino)phenyl)ethenyl)-1-methyl-, iodide di-15-Asp