5-Hydroxy-4-iodo-2-nitro-3-(trifluoromethoxy)pyridine
3-Cyano-6-(fluoromethyl)-2-(trifluoromethoxy)pyridine-5-carboxylic acid
5-Cyano-2-(fluoromethyl)-3-(trifluoromethoxy)pyridine-6-carboxylic acid
3-Hydroxy-2-iodo-6-nitro-5-(trifluoromethoxy)pyridine