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