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