2-5 6-BIS-4-SULFOPHENYL-1 2 4-TRIAZIN-3&

2-5,6-bis-4-sulfophenyl-1,2,4-triazin-3-yl -4-sul

bis(4-sulfophenyl)-1,2,4-triazinylsulfophenylpyridine 3Na

2-[5,6-Bis(4-sulfophenyl)-1,2,4-triazin-3-yl]-4-(4-sulfophenyl)pyridine trisodium salt