4-Fluoro-3-(trifluoromethoxy)-2-(trifluoromethyl)pyridine-6-carboxylic acid
4-Cyano-5-(fluoromethyl)-2-(trifluoromethoxy)pyridine-3-acetic acid
3-Cyano-6-(difluoromethyl)-2-(trifluoromethoxy)-4-(trifluoromethyl)pyridine
2-Fluoro-3-(trifluoromethoxy)-6-(trifluoromethyl)pyridine-4-acetic acid