94249-20-4 4-[[4-[[2-(diethylamino)ethyl]sulphonyl]-2,5-dimethoxyphenyl]azo]-4,5-dihydro-5-oxo-1-(4-sulphophenyl)-1H-pyrazole-3-carboxylic acid, sodium salt
94249-19-1 7-[[4,5-dihydro-3-methyl-5-oxo-1-[4-[[2-(sulphooxy)ethyl]sulphonyl]phenyl]-1H-pyrazol-4-yl]azo]naphthalene-1,3-disulphonic acid, sodium salt