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