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