Methyl 3-fluoro-5-methoxy-6-(trifluoromethoxy)pyridine-2-acetate
Methyl 6-fluoro-2-methoxy-3-(trifluoromethoxy)pyridine-4-carboxylate
Methyl 3-fluoro-4-methoxy-6-(trifluoromethoxy)pyridine-2-acetate
Methyl 2-fluoro-6-methoxy-4-(trifluoromethoxy)pyridine-3-carboxylate