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