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