3-Cyano-4-(difluoromethyl)-2-(trifluoromethoxy)pyridine-6-acetic acid
2-Cyano-5-(difluoromethyl)-3-(trifluoromethoxy)pyridine-6-acetic acid
2-Fluoro-3-hydroxy-6-methyl-5-(trifluoromethoxy)pyridine
2-Fluoro-3-hydroxy-5-methyl-4-(trifluoromethoxy)pyridine