Synonyms: 2-Pyrazolin-5-one,4,4'-methylidynebis[3-methyl-1-phenyl- (6CI,7CI,8CI);3H-Pyrazol-3-one, 4-((1,5-dihydro-3-methyl-5-oxo-1-phenyl-4H-pyrazol-4-ylidene)methyl)-2,4-dihydr o-5-methyl-2-phenyl-;C.I. SolventYellow 93;Diaresin Yellow L 3G;Kayaset Yellow GN;Macrolex Yellow 3G;OplasYellow 140;Plast Yellow 8000;Sandoplast Yellow 3G;