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