Synonyms: 4,4'-((4-Sulpho-1,3-phenylene)bis(imino(6-chloro-1,3,5-triazine-4,2-diyl)imino))bis(5-hydroxy-6-(phenylazo)naphthalene-2,7-disulphonic) acid;5-[[4-chloro-6-[[3-[[4-chloro-6-[(8-hydroxy-7-phenylazo-3,6-disulfo-1-naphthyl)amino]-1,3,5-triazin-2-yl]amino]-4-sulfo-phenyl]amino]-1,3,5-triazin-2-yl]amino]-4-hydroxy-3-phenylazo-naphthalene-2,7-disulfonic acid