3-(Difluoromethyl)-5-methoxy-4-(trifluoromethoxy)pyridine-2-acetic acid
4-Cyano-2-nitro-5-(trifluoromethoxy)pyridine-3-carboxylic acid
4-(Bromomethyl)-6-cyano-3-methoxy-2-(trifluoromethoxy)pyridine
2-Fluoro-4-(trifluoromethoxy)pyridine-5-carboxylic acid