2-Pyrazolin-5-one, 4,4'-(ethylenebis(iminomethylidyne))bis(3-methyl-1-phenyl- 24664-55-9 4,4'-(Ethylenebis(iminomethylidyne))bis(3-methyl-1-phenyl-2-pyrazolin-5-one) BRN 0903515