Ethyl 4-amino-2-(difluoromethyl)pyridine-3-carboxylate
6-(Bromomethyl)-3-(difluoromethyl)-2-nitropyridine
Ethyl 3-amino-5-(difluoromethyl)pyridine-2-carboxylate
2-(Bromomethyl)-4-(difluoromethyl)-6-nitropyridine
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