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