6-Fluoro-4-hydroxy-2-iodo-3-(trifluoromethoxy)pyridine
2-Cyano-6-(difluoromethyl)-3-(trifluoromethoxy)pyridine-5-carboxylic acid
3-Fluoro-4-hydroxy-5-methyl-2-(trifluoromethoxy)pyridine
2-Cyano-3-(difluoromethyl)-6-(trifluoromethoxy)pyridine-4-carboxylic acid