1,7-Naphthalenedisulfonic acid, 4-(benzoylamino)-6-((5-(((5-chloro-2,6-difluoro-4-pyrimidinyl)methylamino)methyl)-2-sulfophenyl)azo)-5-hydroxy-, sodium salt 4-(Benzoylamino)-6-((5-(((5-chloro-2,6-difluoro-4-pyrimidinyl)methylamino)methyl)-2-sulphophenyl)azo)-5-hydroxynaphthalene-1,7-disulphonic acid, sodium salt 83399-75-1 EINECS 280-388-8