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