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