6-Chloro-2-nitro-4-(trifluoromethoxy)pyridine-3-acetic acid
2-Chloro-6-nitro-3-(trifluoromethoxy)pyridine-4-acetonitrile
6-Chloro-3-nitro-4-(trifluoromethoxy)pyridine-2-acetonitrile
4-Chloro-3-(difluoromethyl)-2-(trifluoromethoxy)pyridine-6-acetic acid