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