2-Hydroxy-4-methyl-3-(trifluoromethoxy)pyridine-5-carboxamide
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