4-Fluoro-5-methyl-3-(trifluoromethoxy)pyridine-2-carboxylic acid
4-Hydroxy-2-iodo-3-(trifluoromethoxy)pyridine-5-sulfonyl chloride
6-Hydroxy-2-iodo-4-(trifluoromethoxy)pyridine-3-sulfonyl chloride
2-Hydroxy-5-iodo-3-(trifluoromethoxy)pyridine-4-sulfonyl chloride