2-Cyano-3-(difluoromethyl)-6-(trifluoromethoxy)pyridine-4-acetic acid
3-Fluoro-6-hydroxy-2-methoxy-4-(trifluoromethoxy)pyridine
4-(Difluoromethyl)-3-fluoro-2-(trifluoromethoxy)pyridine-6-carboxylic acid
3-(Difluoromethyl)-5-fluoro-6-(trifluoromethoxy)pyridine-2-carboxylic acid