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