2-((4-(Ethyl(2-hydroxyethyl)amino)phenyl)azo)-5-methoxy-3-methylbenzothiazolium methyl sulphate 68929-07-7 Benzothiazolium, 2-((4-(ethyl(2-hydroxyethyl)amino)phenyl)azo)-5-methoxy-3-methyl-, methyl sulfate (salt) EINECS 273-039-6