3-Chloro-4-(5-chloro-3-methyl-1-phenyl-1H-pyrazol-4-yl)-6-(4-ethoxy-phenyl)-4,5-dihydro-pyridazine

6-(p-Ethoxyphenyl)-4-(3-methyl-5-oxo-1-phenyl-2-pyrazolin-4-yl)-4,5-dihydro-3(2H)-pyridazinone

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)-2-ethyl-4-(3-methyl-5-oxo-1-phenyl-4,5-dihydro-1H-pyrazol-4-yl)-4,5-dihydro-2H-pyridazin-3-one

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