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