4-Cyano-3-hydroxy-2-(trifluoromethoxy)pyridine-6-carboxylic acid
2-Fluoro-3-hydroxy-5-(trifluoromethoxy)pyridine-4-carboxylic acid
3-Fluoro-6-hydroxy-2-(trifluoromethoxy)pyridine-4-carboxaldehyde
6-Fluoro-4-hydroxy-2-methoxy-3-(trifluoromethoxy)pyridine