Methyl 4-hydroxy-5-methyl-3-(trifluoromethoxy)pyridine-2-carboxylate
4-Hydroxy-2-methyl-3-(trifluoromethoxy)pyridine-5-carboxylic acid
5-Hydroxy-3-methyl-4-(trifluoromethoxy)pyridine-2-carboxylic acid
3-(Fluoromethyl)-2-hydroxy-4-(trifluoromethoxy)pyridine-6-methanol