2-(Chloromethyl)-6-fluoro-5-(trifluoromethoxy)pyridine-3-carboxylic acid
2-(Chloromethyl)-6-fluoro-3-(trifluoromethoxy)pyridine-5-carboxylic acid
2-(Chloromethyl)-5-fluoro-3-(trifluoromethoxy)pyridine-6-carboxylic acid
5-Hydroxy-2-nitro-4-(trifluoromethoxy)pyridine-3-carboxylic acid