2-Hydroxy-6-methoxy-4-(trifluoromethoxy)pyridine-3-carboxamide
2-Hydroxy-6-methoxy-3-(trifluoromethoxy)pyridine-5-carboxamide
2-Hydroxy-5-methoxy-6-(trifluoromethoxy)pyridine-3-carboxamide
6-Hydroxy-3-methoxy-4-(trifluoromethoxy)pyridine-2-carboxamide