7-Bromo-3,4-dihydropyrido[2,3-b]pyrazin-2(1H)-one
tert-Butyl 6-bromo-2H-pyrido[3,2-b][1,4]oxazine-4(3H)-carboxylate
5-Fluoro-4-iodo-1H-pyrrolo[2,3-b]pyridine
2-Chloro-5-nitro-3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine
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