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