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