7-Chloro-8-iodo-2-methylimidazo[1,2-a]pyridine
7-Chloro-2-phenyl-2h-pyrazolo[3,4-d]pyridazine
7-Bromo-3-phenyl-3,4-dihydro-2h-pyrido[3,2-b][1,4]oxazine
7-Bromo-3-(pyridin-2-yl)benzo[d]isoxazole
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