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