2-Chloro-6-(difluoromethyl)-3-nitro-5-(trifluoromethoxy)pyridine
5-Chloro-3-(chloromethyl)-2-iodo-4-(trifluoromethoxy)pyridine
2-Chloro-5-(difluoromethyl)-3-nitro-6-(trifluoromethoxy)pyridine
3-Chloro-5-(chloromethyl)-4-iodo-2-(trifluoromethoxy)pyridine