1-(2-((4-((2,6-Dichloro-4-nitrophenyl)azo)phenyl)ethylamino)ethyl)pyridinium chloride 14408-20-9 EINECS 238-382-8 Pyridinium, 1-(2-((4-((2,6-dichloro-4-nitrophenyl)azo)phenyl)ethylamino)ethyl)-, chloride