1,3,5-Naphthalenetrisulfonic acid, 7-((4-((4-((2,5,6-trichloro-4-pyrimidinyl)amino)phenyl)azo)phenyl)azo)-, trisodium salt 1,5,7-Naphthalenetrisulfonic acid, 3-((4-((4-((2,5,6-trichloro-4-pyrimidinyl)amino)phenyl)azo)phenyl)azo)-, trisodium salt 20025-74-5 EINECS 243-469-9 Trisodium 3-((4-((4-((2,5,6-trichloropyrimidin-4-yl)amino)phenyl)azo)phenyl)azo)naphthalene-1,5,7-trisulphonate