Ethyl 4-chloro-6-(fluoromethyl)-3-(trifluoromethoxy)pyridine-2-carboxylate
Ethyl 2-chloro-3-(difluoromethyl)-5-(trifluoromethoxy)pyridine-6-carboxylate
Ethyl 5-chloro-4-(fluoromethyl)-3-(trifluoromethoxy)pyridine-2-carboxylate
Methyl 5-chloro-2-(difluoromethyl)-3-(trifluoromethoxy)pyridine-4-carboxylate