4-(Difluoromethyl)-3-nitro-6-(trifluoromethoxy)pyridine-2-acetonitrile
5-(Difluoromethyl)-3-nitro-2-(trifluoromethoxy)pyridine-4-acetonitrile
4-(Difluoromethyl)-2-nitro-6-(trifluoromethoxy)pyridine-3-acetonitrile
Ethyl 5-(bromomethyl)-4-(trifluoromethoxy)-2-(trifluoromethyl)pyridine-3-acetate