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