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