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