Synonyms:
5,5'-dihydroxy-2,2'-dinaphthylamine-7,7'-disulphonic acid ; 6,6'-iminobis(1-hydroxynaphthalene-3-sulfonic acid) ; 4,4'-dihydroxy-7,7'-iminodi(naphthalene-2-sulfonic acid) ; 4-hydroxy-7-[(5-hydroxy-7-sulfo-2-naphthyl)amino]naphthalene-2-sulfonic acid ; 4-hydroxy-7-[(5-hydroxy-7-sulfonaphthalen-2-yl)amino]naphthalene-2-sulfonic acid ; bis(4-hydroxy-2-sulfonaphthalene-7-yl)amine ; rhoduline acid ; 4,4'-dihydroxy-7,7'-iminodi(naphthalene-2-sulphonic acid) ; n,n-bis(5-naphthol-7-sulfonic acid)amine ; 7,7'-iminobis(4-hydroxy-2-naphthalenesulfonic acid)