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