Methyl 2-cyano-3-hydroxy-5-(trifluoromethoxy)pyridine-6-acetate
Methyl 2-cyano-3-hydroxy-4-(trifluoromethoxy)pyridine-5-acetate
5-Chloro-4-hydroxy-2-(trifluoromethoxy)pyridine-3-sulfonamide
3-Cyano-6-hydroxy-4-(trifluoromethoxy)pyridine-2-acetic acid