5-Hydroxy-2-methyl-4-(trifluoromethoxy)pyridine-3-sulfonamide
2-Hydroxy-4-(trifluoromethoxy)-6-(trifluoromethyl)pyridine-3-carboxylic acid
4-Hydroxy-3-methyl-5-(trifluoromethoxy)pyridine-2-sulfonamide
Ethyl 3-hydroxy-2-(trifluoromethoxy)-5-(trifluoromethyl)pyridine-4-carboxylate