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