5-Cyano-3-methyl-2-(trifluoromethoxy)pyridine-4-acetic acid
3-Chloro-5-(difluoromethyl)-2-nitro-6-(trifluoromethoxy)pyridine
3-Chloro-2-(difluoromethyl)-4-nitro-6-(trifluoromethoxy)pyridine
6-Chloro-3-(difluoromethyl)-2-nitro-4-(trifluoromethoxy)pyridine