2-Fluoro-3-hydroxy-6-(trifluoromethoxy)-4-(trifluoromethyl)pyridine
5-Fluoro-2-(difluoromethyl)-3-hydroxy-6-(trifluoromethoxy)pyridine
4-Fluoro-2-(difluoromethyl)-6-hydroxy-3-(trifluoromethoxy)pyridine
3-Fluoro-4-(difluoromethyl)-6-hydroxy-2-(trifluoromethoxy)pyridine