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