[6-(4-Ethoxy-phenyl)-4-(5-hydrazino-3-methyl-1-phenyl-1H-pyrazol-4-yl)-4,5-dihydro-pyridazin-3-yl]-hydrazine

[3-(4-Ethoxy-phenyl)-5-(3-methyl-5-oxo-1-phenyl-4,5-dihydro-1H-pyrazol-4-yl)-6-oxo-5,6-dihydro-4H-pyridazin-1-yl]-acetic acid ethyl ester

N-[6-(4-Ethoxy-phenyl)-4-(3-methyl-1-phenyl-5-{N'-[1-p-tolyl-meth-(E)-ylidene]-hydrazino}-1H-pyrazol-4-yl)-4,5-dihydro-pyridazin-3-yl]-N'-[1-p-tolyl-meth-(E)-ylidene]-hydrazine