Synonyms: Ethanaminium, 2-((4-(2-(2-chloro-4-nitrophenyl)diazenyl)phenyl)ethylamino)-N,N,N-trimethyl-, methyl sulfate (1:1);2-((4-((2-Chloro-4-nitrophenyl)azo)phenyl)ethylamino)-N,N,N-trimethylethanaminium methyl sulfate;2-(N-Ethyl-N-(4-((2-chloro-4-nitrophenyl)azo)phenyl)-N,N,N-trimethylethanaminium, methyl sulfate;(2-((4-((2-Chloro-4-nitrophenyl)azo)phenyl)ethylamino)ethyl)trimethylammonium methyl sulphate;Ethanaminium, 2-((4-((2-chloro-4-nitrophenyl)azo)phenyl)ethylamino)-N,N,N-trimethyl-, methyl sulfate;2-[{4-[(E)-(2-chloro-4-nitrophenyl)diazenyl]phenyl}(ethyl)amino]-N,N,N-trimethylethanaminium methyl sulfate