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