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