73398-52-4 EINECS 277-450-1 Tetrasodium 4-hydroxy-5-((4-((5-hydroxy-6-((4-methoxy-2-sulphonatophenyl)azo)-7-sulphonato-2-naphthyl)amino)-6-(morpholino)-1,3,5-triazin-2-yl)amino)-3-(phenylazo)naphthalene-2,7-disulphonate