Ethyl 6-bromo-3-(difluoromethyl)-4-(trifluoromethoxy)pyridine-2-carboxylate
Ethyl 2-bromo-5-(difluoromethyl)-3-(trifluoromethoxy)pyridine-4-carboxylate
Methyl 5-bromo-2-(difluoromethyl)-3-(trifluoromethoxy)pyridine-4-carboxylate
Methyl 5-bromo-3-(difluoromethyl)-4-(trifluoromethoxy)pyridine-2-carboxylate