5-Hydroxy-3-nitro-2-(trifluoromethoxy)pyridine-4-carbonyl chloride
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