Synonyms: 1H-Pyrazole-1-carboxamide,4-[(2,5-dimethylphenyl)hydrazono]-4,5-dihydro-3-methyl-5-oxo- (9CI);2-Pyrazoline-1-carboxamide, 3-methyl-4,5-dioxo-, 4-(2,5-xylylhydrazone) (8CI);1-Carbamoyl-3-methyl-2-pyrazoline-4,5-dione 4-(2,5-dimethylphenylhydrazone)