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