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