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cas no 1934-21-0 4,5-dihydro-5-oxo-1-(4-sulfophenyl)-4-[(4-sulfophenyl)azo]-1H-Pyrazole-3-carboxylic acid, trisodium salt; Dihydro-5-oxo-1-(4-sulfophenyl)- 4-((4-sulfophenyl)azo)-1H- pyrazole-3- carboxylic acid, trisodium salt; Filter Yellow; Pyrazole-3-carboxylic acid, 4,5-dihydro-5-oxo-1-(4- sulfophenyl)- 4-((4-sulfophenyl)azo)-, trisodium salt; Tartrazine C; Trisodium 1-(4-sulfonatophenyl)-4-(4-sulfonatophenylazo)-5- pyrazolone-3- carboxylate; Trisodium 1-(4-sulfophenyl)-4-((4-sulfophenyl)azo) -1H-pyrazole-3-carboxylate;
