1,3-Benzenedisulfonic acid, 4,4'-(1,2-ethenediylbis((3-sulfo-4,1-phenylene)imino(6-chloro-1,3,5-triazine-4,2-diyl)imino))bis(6-((5-(aminocarbonyl)-1-ethyl-1,6-dihydro-2-hydroxy-4-methyl-6-oxo-3-pyridinyl)azo)-, hexasodium salt 68991-98-0 EINECS 273-662-3