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