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