Ethyl 5-chloro-3-(trifluoromethoxy)-4-(trifluoromethyl)pyridine-2-carboxylate
Ethyl 5-chloro-4-(trifluoromethoxy)-3-(trifluoromethyl)pyridine-2-carboxylate
Ethyl 3-chloro-2-(trifluoromethoxy)-4-(trifluoromethyl)pyridine-5-carboxylate
Ethyl 2-chloro-4-(trifluoromethoxy)-3-(trifluoromethyl)pyridine-5-carboxylate