3-bromo-6-(bromomethyl)pyridazinehydrobromide 
 
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3-((6-bromopyridazin-3-yl)methyl)-2-ethyl-5,7-dimethyl-3H-imidazo4,5-bpyridine 
[1]CurrentPatentAssignee:UNIVERSITYOFMONTREAL;BRISTOL-MYERSSQUIBBCO-WO2018/5591,2018,A1Locationinpatent:Page/Pagecolumn296