2,7-Naphthalenedisulfonic acid, 5-(benzoylamino)-4-hydroxy-3-((1-sulfo-6-((2-(sulfooxy)ethyl)sulfonyl)-2-naphthalenyl)azo)- 5-(Benzoylamino)-4-hydroxy-3-((1-sulpho-6-((2-(sulphooxy)ethyl)sulphonyl)-2-naphthyl)azo)naphthalene-2,7-disulphonic acid 68400-00-0 EINECS 270-006-8