94386-25-1 EINECS 305-248-6 Tetralithium 4-amino-6-((4-(2-(4-((2,4-diaminophenyl)azo)-2-sulphonatophenyl)vinyl)-3-sulphonatophenyl)azo)-5-hydroxy-3-((4-nitrophenyl)azo)naphthalene-2,7-disulphonate