2,7-Naphthalenedisulfonic acid, 4-hydroxy-5-((4-(methylamino)-6-((3-((2,5,6-trichloro-4-pyrimidinyl)amino)phenyl)amino)-1,3,5-triazin-2-yl)amino)-3-((2-sulfophenyl)azo)-, trisodium salt 72139-15-2 C.I. Reactive Red 56 EINECS 276-372-5 Trisodium 4-hydroxy-5-((4-(methylamino)-6-((3-((2,5,6-trichloro-4-pyrimidinyl)amino)phenyl)amino)-1,3,5-triazin-2-yl)amino)-3-((2-sulphonatophenyl)azo)naphthalene-2,7-disulphonate