5-Chloro-2-iodo-3-(trifluoromethoxy)pyridine-4-acetic acid
5-Chloro-3-(difluoromethyl)-4-(trifluoromethoxy)pyridine-2-acetic acid
3-Cyano-4-fluoro-2-methoxy-6-(trifluoromethoxy)pyridine
3-Chloro-5-(difluoromethyl)-2-(trifluoromethoxy)pyridine-4-acetic acid