Ethyl 5-amino-4-bromo-2-(difluoromethyl)pyridine-3-carboxylate
2-(Difluoromethyl)-4,6-diiodopyridine-3-sulfonyl chloride
Ethyl 3-amino-4-bromo-5-(difluoromethyl)pyridine-2-carboxylate
5-(Difluoromethyl)-2,4-diiodopyridine-3-sulfonyl chloride
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