3,6-Dibromo-1H-pyrazolo[3,4-b]pyridine
Methyl 1-(5-bromopyridin-2-yl)-5-(tert-butyl)-1H-pyrazole-4-carboxylate
4,5-Dichloro-6-methyl-2-(pyridin-2-yl)pyrimidine
3,4-Dihydro-2H-pyrido[3,2-b][1,4]oxazine
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