84100-38-9

4-(4,5-Dihydro-4-(3-(5-hydroxy-3-methyl-1-(4-sulphophenyl)-1H-pyrazol-4-yl)allylidene)-3-methyl-5-oxo-1H-pyrazol-1-yl)benzenesulphonic acid, compound with triethylamine (1:3)