6-(4-Ethoxy-phenyl)-4-(3-methyl-1-phenyl-5-thioxo-4,5-dihydro-1H-pyrazol-4-yl)-2H-pyridazine-3-thione

6-(4-Ethoxy-phenyl)-3-methoxy-4-(5-methoxy-3-methyl-1-phenyl-1H-pyrazol-4-yl)-4,5-dihydro-pyridazine

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