Ethyl 4-fluoro-5-hydroxy-3-(trifluoromethoxy)pyridine-2-carboxylate
3-(Difluoromethyl)-2-fluoro-6-(trifluoromethoxy)pyridine-4-acetic acid
2-(Fluoromethyl)-6-hydroxy-4-methoxy-3-(trifluoromethoxy)pyridine
Ethyl 4-fluoro-3-hydroxy-2-(trifluoromethoxy)pyridine-5-carboxylate