Ethyl 5-bromo-3-(difluoromethyl)-2-fluoropyridine-4-carboxylate
6-Bromo-3-cyano-2-(difluoromethyl)pyridine-4-sulfonyl chloride
5-Bromo-3-(bromomethyl)-4-cyano-2-(difluoromethyl)pyridine
2-Bromo-5-cyano-3-(difluoromethyl)pyridine-4-sulfonyl chloride
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