4-Cyano-2-(difluoromethyl)-6-methyl-3-(trifluoromethoxy)pyridine
4-Cyano-2-(difluoromethyl)-5-methyl-3-(trifluoromethoxy)pyridine
4-Cyano-2-(difluoromethyl)-3-methyl-6-(trifluoromethoxy)pyridine
5-Cyano-3-(difluoromethyl)-2-methyl-4-(trifluoromethoxy)pyridine