1,7-Naphthalenedisulfonic acid, 4-(benzoylamino)-6-((5-(((5-chloro-2,6-difluoro-4-pyrimidinyl)amino)methyl)-1-sulfo-2-naphthalenyl)azo)-5-hydroxy-, trisodium salt 5-(((2,4-Difluoro-5-chloropyrimid-6-yl)amino)methyl)-2-((4-(benzoylamino)-5-hydroxy-1,7-disulfonaphth-6-yl)azo)-1-naphthalenesulfonic acid, trisodium salt 73019-06-4