3-Cyano-5-hydroxy-2-(trifluoromethoxy)pyridine-4-acetonitrile
5-Cyano-4-hydroxy-3-(trifluoromethoxy)pyridine-2-acetonitrile
Ethyl 6-cyano-3-(difluoromethyl)-4-(trifluoromethoxy)pyridine-2-carboxylate
Ethyl 2-cyano-5-(difluoromethyl)-3-(trifluoromethoxy)pyridine-4-carboxylate