Synonyms: 1H-Pyrazole-3-carboxylic acid, 4,4'-(1,2-ethenediylbis((3-sulfo-4,1-phenylene)imino(6-chloro-1,3,5-triazine-4,2-diyl)imino(6-sulfo-3,1-phenylene)azo))bis(1-(2-chlorophenyl)-4,5-dihydro-5-oxo-, sodium salt;1H-Pyrazole-3-carboxylic acid, 4,4'-(1,2-ethenediylbis((3-sulfo-4,1-phenylene)imino(6-chloro-1,3,5-triazine-4, 2-diyl)imino(6-sulfo-3,1-phenylene)azo))bis(1-(2-chlorophenyl)-4,5-dihydro-5-oxo-, sodium salt;sodium 4-[5-[[4-[[4-[2-[4-[[4-[[3-[[3-carboxy-1-(2-chlorophenyl)-5-oxo-4H-pyrazol-4-yl]azo]-4-sulfo-phenyl]amino]-6-chloro-1,3,5-triazin-2-yl]amino]-2-sulfo-phenyl]vinyl]-3-sulfo-phenyl]amino]-6-chloro-1,3,5-triazin-2-yl]amino]-2-sulfo-phenyl]azo-1-(2-chlorophenyl)-5-oxo-4H-pyrazole-3-carboxylate