3-Cyano-5-(difluoromethyl)-2-methoxy-4-(trifluoromethoxy)pyridine
5-Cyano-2-hydroxy-3-methoxy-4-(trifluoromethoxy)pyridine
5-Cyano-4-(difluoromethyl)-3-methoxy-2-(trifluoromethoxy)pyridine
3-Cyano-4-(difluoromethyl)-2-methoxy-5-(trifluoromethoxy)pyridine