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