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