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