Methyl 4-(difluoromethyl)-2-methyl-3-(trifluoromethoxy)pyridine-5-acetate
Methyl 3-(difluoromethyl)-5-methyl-6-(trifluoromethoxy)pyridine-2-acetate
Methyl 4-(fluoromethyl)-2-methyl-3-(trifluoromethoxy)pyridine-5-acetate
Methyl 3-(difluoromethyl)-5-methyl-4-(trifluoromethoxy)pyridine-2-acetate