Ethyl 2-(difluoromethyl)-4-nitropyridine-5-carboxylate
3-Bromo-4-(difluoromethyl)-2-(trifluoromethyl)pyridine
Ethyl 2-(difluoromethyl)-3-nitropyridine-5-carboxylate
3-Bromo-2-(difluoromethyl)-4-(trifluoromethyl)pyridine
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