1,5-Naphthalenedisulfonic acid, 2-((8-((3-((5-chloro-2,6-difluoro-4-pyrimidinyl)amino)benzoyl)amino)-1-hydroxy-3,6-disulfo-2-naphthalenyl)azo)-, tetrasodium salt 68238-92-6 EINECS 269-412-8 Tetrasodium 2-((8-((3-((5-chloro-2,6-difluoro-4-pyrimidinyl)amino)benzoyl)amino)-1-hydroxy-3,6-disulphonato-2-naphthyl)azo)naphthalene-1,5-disulphonate