trisodium 8-[[4-[(4-aminophenyl)azo]-6-sulphonatonaphthyl]azo]-5-[(2-hydroxy-6-sulphonatonaphthyl)azo]naphthalene-2-sulphonate 4-[[4-[(4-Aminophenyl)azo]-6-sodiosulfo-1-naphthalenyl]azo]-2'-hydroxy[1,1'-azobisnaphthalene]-6,6'-disulfonic acid disodium salt C.I.34090 trisodium,(5E)-5-[[4-[[4-[(4-aminophenyl)diazenyl]-6-sulfonatonaphthalen-1-yl]diazenyl]-6-sulfonatonaphthalen-1-yl]hydrazinylidene]-6-oxonaphthalene-2-sulfonate C.I.Direct Blue 120:1 C.I.Direct Blue 120A Diazo Blue BR 2-Naphthalenesulfonic acid, 5-((4-((4-((4-aminophenyl)azo)-6-sulfo-1-naphthalenyl)azo)-6-sulfo-1-naphthalenyl)azo)-6-hydroxy-, trisodium salt