3-Hydroxy-5-methyl-2-(trifluoromethoxy)pyridine-4-carboxylic acid
5-Hydroxy-4-methyl-3-(trifluoromethoxy)pyridine-2-carboxylic acid
3-(Bromomethyl)-6-hydroxy-2-(trifluoromethoxy)pyridine-5-carboxylic acid
3-Hydroxy-2-methyl-4-(trifluoromethoxy)pyridine-5-carboxylic acid