3-(Difluoromethyl)-4-methyl-2-(trifluoromethoxy)pyridine-5-acetonitrile
4-(Difluoromethyl)-2-methyl-3-(trifluoromethoxy)pyridine-5-acetonitrile
3-(Difluoromethyl)-2-methyl-4-(trifluoromethoxy)pyridine-5-acetonitrile
3-(Difluoromethyl)-4-methyl-5-(trifluoromethoxy)pyridine-2-acetonitrile