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