Ethyl 4-fluoro-3-hydroxy-2-(trifluoromethoxy)pyridine-5-carboxylate
Ethyl 4-fluoro-6-hydroxy-3-(trifluoromethoxy)pyridine-2-carboxylate
4-Hydroxy-6-methoxy-2-(trifluoromethoxy)-3-(trifluoromethyl)pyridine
2-Fluoro-6-iodo-3-methyl-5-(trifluoromethoxy)pyridine