Ethyl 3-bromo-2-(difluoromethyl)pyridine-4-carboxylate
Ethyl 2-bromo-5-(difluoromethyl)pyridine-3-carboxylate
6-(Difluoromethyl)-3-nitropyridine-2-sulfonamide
Ethyl 3-(chloromethyl)-2-(trifluoromethoxy)-5-(trifluoromethyl)pyridine-4-acetate
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