2-Cyano-6-(difluoromethyl)-3-(trifluoromethoxy)pyridine-4-acetonitrile
6-Cyano-3-(difluoromethyl)-4-(trifluoromethoxy)pyridine-2-acetonitrile
2-Cyano-5-(difluoromethyl)-3-(trifluoromethoxy)pyridine-4-acetonitrile
2-Fluoro-3-methoxy-5-(trifluoromethoxy)pyridine-6-sulfonyl chloride