disodium 7,7'-(carbonyldiimino)bis[4-hydroxy-3-[(2-methoxyphenyl)azo]naphthalene-2-sulphonate]

7,7'-(Carbonyldiimino)bis[4-hydroxy-3-(2-methoxyphenylazo)-2-naphthalenesulfonic acid]disodium salt

2-Naphthalenesulfonic acid, 7,7'-(carbonyldiimino)bis[ 4-hydroxy-3-[(2-methoxyphenyl)azo]-, disodium salt