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