Cobaltate(3-),bis[6-(amino-kN)-5-[[2-(hydroxy-kO)-4-nitrophenyl]azo-kN1]-2-naphthalenesulfonato(3-)]-,trisodium (9CI); Cobaltate(3-),bis[6-amino-5-[(2-hydroxy-4-nitrophenyl)azo]-2-naphthalenesulfonato(3-)]-,trisodium; 2-Naphthalenesulfonic acid, 6-amino-5-[(2-hydroxy-4-nitrophenyl)azo]-,cobalt complex
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