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