5-Hydroxy-2-iodo-3-(trifluoromethoxy)pyridine-4-carbonyl chloride
4-Hydroxy-5-iodo-3-(trifluoromethoxy)pyridine-2-carbonyl chloride
4-(Bromomethyl)-3-hydroxy-2-nitro-6-(trifluoromethoxy)pyridine
4-Hydroxy-3-iodo-2-(trifluoromethoxy)pyridine-5-carbonyl chloride