2-Hydroxy-6-nitro-3-(trifluoromethoxy)pyridine-5-sulfonamide
3-Hydroxy-4-methoxy-2-(trifluoromethoxy)pyridine-5-acetonitrile
6-(Fluoromethyl)-3-hydroxy-2-methoxy-4-(trifluoromethoxy)pyridine
2-(Fluoromethyl)-5-hydroxy-3-methoxy-6-(trifluoromethoxy)pyridine