2-Chloro-3-nitro-4-(trifluoromethoxy)pyridine-5-sulfonamide
2-Cyano-6-hydroxy-4-methoxy-3-(trifluoromethoxy)pyridine
4-Bromo-2-(difluoromethyl)-5-(trifluoromethoxy)pyridine-3-acetic acid
5-Bromo-3-(difluoromethyl)-2-(trifluoromethoxy)pyridine-4-acetic acid