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