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