EINECS 239-892-3, Trisodium 4-hydroxy-3-((2-sulphonatophenyl)azo)-5-((2,5,6-trichloropyrimidin-4-yl)amino)naphthalene-2,7-disulphonate, 2,7-Naphthalenedisulfonic acid,4-hydroxy-3-((2-sulfophenyl)azo)-5-((2,5,6-trichloro-4-pyrimidinyl)amino)-,trisodium salt, 2,7-Naphthalenedisulfonic acid,4-hydroxy-3-(2-(2-sulfophenyl)diazenyl)-5-((2,5,6-trichloro-4-pyrimidinyl)amino)-,sodium salt (1:3), Reactone red 2B,