3-Fluoro-5-hydroxy-2-(trifluoromethoxy)pyridine-6-sulfonyl chloride
4-Fluoro-2-(fluoromethyl)-6-(trifluoromethoxy)pyridine-3-carboxylic acid
3-Fluoro-4-hydroxy-6-(trifluoromethoxy)pyridine-2-sulfonyl chloride
4-Fluoro-2-(fluoromethyl)-3-(trifluoromethoxy)pyridine-6-carboxylic acid