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