Ethyl 4-cyano-2-methoxy-3-(trifluoromethoxy)pyridine-5-carboxylate
3-Chloro-5-(difluoromethyl)-6-methyl-2-(trifluoromethoxy)pyridine
Ethyl 5-cyano-3-methoxy-4-(trifluoromethoxy)pyridine-2-carboxylate
Ethyl 5-cyano-4-methoxy-3-(trifluoromethoxy)pyridine-2-carboxylate