3-Hydroxy-5-nitro-4-(trifluoromethoxy)pyridine-2-carbonyl chloride
2-(Fluoromethyl)-3-hydroxy-5-methoxy-6-(trifluoromethoxy)pyridine
2-(Bromomethyl)-5-hydroxy-4-methoxy-3-(trifluoromethoxy)pyridine
6-(Bromomethyl)-4-hydroxy-2-methoxy-3-(trifluoromethoxy)pyridine