Synonyms: 1H-Pyrazole-3-carboxylicacid,4-[[4-[(4,6-dichloro-1,3,5-triazin-2-yl)amino]-2-sulfophenyl]azo]-4,5-dihydro-5-oxo-1-(4-sulfophenyl)-,trisodium salt (9CI); 2-Pyrazoline-3-carboxylic acid,4-[[4-[(4,6-dichloro-s-triazin-2-yl)amino]-2-sulfophenyl]azo]-5-oxo-1-(p-sulfophenyl)-,trisodium salt (8CI)