3-Cyano-2-(difluoromethyl)-6-(trifluoromethoxy)pyridine-4-acetic acid
4-Fluoro-2-methyl-6-(trifluoromethoxy)pyridine-3-acetonitrile
3-Cyano-2-(difluoromethyl)-4-(trifluoromethoxy)pyridine-6-acetic acid
4-(Difluoromethyl)-2-fluoro-3-(trifluoromethoxy)pyridine-6-carboxylic acid