5-Iodo-3-(trifluoromethoxy)pyridine-2-acetonitrile
2-(Difluoromethyl)-4-nitro-6-(trifluoromethoxy)pyridine-3-acetonitrile
3-(Difluoromethyl)-4-methyl-2-(trifluoromethoxy)pyridine-5-acetonitrile
4-(Difluoromethyl)-2-methyl-3-(trifluoromethoxy)pyridine-5-acetonitrile