(2-(Ethyl(4-((4-nitrophenyl)azo)phenyl)amino)ethyl)trimethylammonium chloride 12217-46-8 57210-34-1 EINECS 260-623-0 Ethanaminium, 2-(ethyl(4-((4-nitrophenyl)azo)phenyl)amino)-N,N,N-trimethyl-, chloride