5-Cyano-3-hydroxy-4-(trifluoromethoxy)pyridine-2-acetonitrile
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