4-(2-Chloro-4-dimethylaminobenzylidene)-1-(4'-carboxyphenyl)-3-methylpyrazol-5-one 68892-09-1 Benzoic acid, 4-(4-((2-chloro-4-(dimethylamino)phenyl)methylene)-4,5-dihydro-3-methyl-5-oxo-1H-pyrazol-1-yl)-