2-Methoxy-3-nitro-5-(trifluoromethoxy)pyridine-6-sulfonamide
6-(Chloromethyl)-3-methoxy-2-(trifluoromethoxy)pyridine-4-acetonitrile
2-Methoxy-3-nitro-4-(trifluoromethoxy)pyridine-5-sulfonamide
2-(Chloromethyl)-5-methoxy-3-(trifluoromethoxy)pyridine-6-acetonitrile