72639-25-9 4-[[5-[[5-chloro-6-methyl-2-(methylsulphonyl)-4-pyrimidinyl]amino]-2-sulphophenyl]azo]-4,5-dihydro-1-(2-methyl-4-sulphophenyl)-5-oxo-1H-pyrazole-3-carboxylic acid, sodium salt
72639-32-8 6-[[6-[[5-Chloro-6-methyl-2-(methylsulfonyl)-4-pyrimidinyl]amino]-1-hydroxy-3-sulfo-2-naphthalenyl]azo]-1,3,5-naphthalenetrisulfonic acid tetrasodium salt