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