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