Ethyl 3-(difluoromethyl)-5-methoxy-6-(trifluoromethyl)pyridine-2-carboxylate
2-(Bromomethyl)-5-(difluoromethyl)-6-methyl-3-nitropyridine
6-(Bromomethyl)-3-(difluoromethyl)-4-methyl-2-nitropyridine
Ethyl 6-(difluoromethyl)-3-methoxy-2-(trifluoromethyl)pyridine-4-carboxylate