4-Bromo-2-(3,4-dichlorophenyl)-5-((6-iodo-3-pyridinyl)methoxy)-3(2H)-pyridazinone , its CAS NO. is 122322-26-3, the synonym is 3(2H)-Pyridazinone, 4-bromo-2-(3,4-dichlorophenyl)-5-((6-iodo-3-pyridinyl)methoxy)- .