3H-Pyrazol-3-one, 4-((4,5-dihydro-3-methyl-5-oxo-1H-pyrazol-4-ylidene)methyl)-2,4-dihydro-5-methyl- 4-((3'-Methylpyrazol-5'-one-4'-yl)methylene)-3-methylpyrazol-5-one 4-((4,5-Dihydro-3-methyl-5-oxo-1H-pyrazol-4-ylidene)methyl)-2,4-dihydro-5-methyl-3H-pyrazol-3-one 68427-36-1 EINECS 270-394-9