5-[(2-Chloro-phenyl)-hydroxy-methyl]-6-methyl-4,5-dihydro-2H-pyridazin-3-one
levulinic acid
2-chloro-benzaldehyde
4-Oxo-3-(o-chlorobenzylidene)-pentanoic Acid
5-[1-(2-Chloro-phenyl)-meth-(E)-ylidene]-6-methyl-4,5-dihydro-2H-pyridazine-3-thione
2-Benzoyl-5-[1-(2-chloro-phenyl)-meth-(Z)-ylidene]-6-methyl-4,5-dihydro-2H-pyridazin-3-one
4-[1-(2-Chloro-phenyl)-meth-(E)-ylidene]-3-methyl-6-(3-methyl-pyrazol-1-yl)-4,5-dihydro-pyridazine
7-[1-(2-Chloro-phenyl)-meth-(E)-ylidene]-3,6-dimethyl-7,8-dihydro-[1,2,4]triazolo[4,3-b]pyridazine
7-[1-(2-Chloro-phenyl)-meth-(E)-ylidene]-6-methyl-7,8-dihydro-tetrazolo[1,5-b]pyridazine