4,5-DICHLORO-2-(3,5-DICHLOROPHENYL)-2,3-DIHYDROPYRIDAZIN-3-ONE
1-PHENYL-4,5-DICHLORO-6-PYRIDAZONE
4,5-DICHLORO-2-(2,6-DICHLOROBENZYL)-2,3-DIHYDROPYRIDAZIN-3-ONE
4,5-dichloro-2-[3-(trifluoromethyl)phenyl]pyridazin-3(2H)-one
2-CHLOROMETHYL-4,5-DICHLOROPYRIDAZIN-3(2H)-ONE
2-(3-CHLORO-4-FLUOROPHENYL)-4,5-DICHLORO-PYRIDAZINE-3-(2H)-ONE
4,5-DICHLORO-2-(HYDROXYMETHYL)-2,3-DIHYDROPYRIDAZIN-3-ONE
2-BENZYL-4,5-DICHLORO-2,3-DIHYDROPYRIDAZIN-3-ONE