4-Chloro-2-(4-chlorophenyl)-5-((6-iodo-3-pyridinyl)methoxy)-3(2H)-pyridazinone , its CAS NO. is 122322-19-4, the synonym is 3(2H)-Pyridazinone, 4-chloro-2-(4-chlorophenyl)-5-((6-iodo-3-pyridinyl)methoxy)- .