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