Ethyl 4-bromo-5-(difluoromethyl)-3-(trifluoromethyl)pyridine-2-carboxylate
Ethyl 2-chloro-3-(difluoromethyl)-4-fluoropyridine-5-carboxylate
Ethyl 5-bromo-3-(difluoromethyl)-4-(trifluoromethyl)pyridine-2-carboxylate
Methyl 3-chloro-2-(difluoromethyl)-5-fluoropyridine-6-carboxylate