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