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