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