4-Hydroxy-3-iodo-6-(trifluoromethoxy)pyridine-2-sulfonyl chloride
3-Hydroxy-2-iodo-6-(trifluoromethoxy)pyridine-5-carbonyl chloride
2-Hydroxy-6-methoxy-3-methyl-5-(trifluoromethoxy)pyridine
3-Hydroxy-2-iodo-5-(trifluoromethoxy)pyridine-4-carbonyl chloride