72796-93-1 Benzenesulfonic acid, 4-(4-(5-(1,5-dihydro-3-methyl-5-oxo-1-(4-sulfophenyl)-4H-pyrazol-4-ylidene)-1,3-pentadienyl)-4,5-dihydro-3-methyl-5-oxo-1H-pyrazol-1-yl)-, dipotassium salt Benzensulfonic acid, 4-(4,5-dihydro-4-(5-(5-hydroxy-3-methyl-1-(4-sulfophenyl)-1H-pyrazol-4-yl)-2,4-pentadienylidene)-3-methyl-5-oxo-1H-pyrazol-1-yl)-, dipotassium salt