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