2-Fluoro-4-(trifluoromethoxy)-3-(trifluoromethyl)pyridine-5-carboxylic acid
2-Fluoro-3-(trifluoromethoxy)-5-(trifluoromethyl)pyridine-6-carboxylic acid
2-Fluoro-3-(trifluoromethoxy)-4-(trifluoromethyl)pyridine-5-carboxylic acid
3-Hydroxy-5-methyl-2-(trifluoromethoxy)pyridine-4-acetic acid