6-Chloro-4-nitro-3-(trifluoromethoxy)-2-(trifluoromethyl)pyridine
2-Chloro-4-nitro-3-(trifluoromethoxy)-6-(trifluoromethyl)pyridine
4-Chloro-3-methoxy-2-(trifluoromethoxy)-6-(trifluoromethyl)pyridine
2-Chloro-3-nitro-5-(trifluoromethoxy)-4-(trifluoromethyl)pyridine