3-Chloro-5-fluoro-2-(trifluoromethoxy)pyridine-6-carboxylic acid
3-Chloro-2-fluoro-6-(trifluoromethoxy)pyridine-4-carboxylic acid
6-Cyano-3-fluoro-2-methoxy-4-(trifluoromethoxy)pyridine
2-Chloro-5-fluoro-3-(trifluoromethoxy)pyridine-6-carboxylic acid