1-(4-Sulfophenyl)-3-methyl-4-(4-(bis(cyanoethyl)amino)phenylmethylene)-4,5-dihydro-5-pyrazolone 4-(4-((4-(Bis(2-cyanoethyl)amino)phenyl)methylene)-4,5-dihydro-3-methyl-5-oxo-1H-pyrazol-1-yl)benzenesulphonic acid 68541-05-9 Benzenesulfonic acid, 4-(4-((4-(bis(2-cyanoethyl)amino)phenyl)methylene)-4,5-dihydro-3-methyl-5-oxo-1H-pyrazol-1-yl)- EINECS 271-338-6