Synonyms: 4,4'-((2-Sulpho-1,4-phenylene)bis(imino(6-chloro-1,3,5-triazine-4,2-diyl)imino(6-sulpho-3,1-phenylene)azo))bis(4,5-dihydro-5-oxo-1-(4-sulphophenyl)-1H-pyrazole-3-carboxylic) acid;4-[5-[[4-[[4-[[4-[[3-[[3-carboxy-5-oxo-1-(4-sulfophenyl)-4H-pyrazol-4-yl]azo]-4-sulfo-phenyl]amino]-6-chloro-1,3,5-triazin-2-yl]amino]-2-sulfo-phenyl]amino]-6-chloro-1,3,5-triazin-2-yl]amino]-2-sulfo-phenyl]azo-5-oxo-1-(4-sulfophenyl)-4H-pyrazole-3-carboxylic acid