1-Naphthalenesulfonic acid,4-amino-6-[[4'-[(5-amino-1-hydroxy- 3-sulfo-2-naphthalenyl)azo]-3,3'-dimethyl[1,- 1'-biphenyl]-4-yl]azo]-5-hydroxy-,disodium salt
1-Naphthalenesulfonic acid,4-amino-6-[[4'-[(5-amino-1-hydroxy- 3-sulfo-2-naphthalenyl)azo]-3,3'-dimethyl[1,- 1'-biphenyl]-4-yl]azo]-5-hydroxy-,disodium salt
