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