(2-((4-((2-Chloro-4-nitrophenyl)azo)phenyl)ethylamino)ethyl)(2-hydroxypropyl)dimethylammonium hydrogen sulphate 1-Propanaminium, N-(2-((4-((2-chloro-4-nitrophenyl)azo)phenyl)ethylamino)ethyl)-2-hydroxy-N,N-dimethyl-, sulfate (1:1) (salt) 2-(Ethyl(4-((2-chloro-4-nitrophenyl)azo)phenyl)amino)-N,N-dimethyl-N-(2-hydroxypropyl)ethanaminium hydrogen sulfate 72894-28-1 EINECS 276-973-2