3-Nitro-5-(trifluoromethoxy)-4-(trifluoromethyl)pyridine-2-acetonitrile
5-Nitro-4-(trifluoromethoxy)-2-(trifluoromethyl)pyridine-3-acetonitrile
4-(Difluoromethyl)-3-nitro-5-(trifluoromethoxy)-2-(trifluoromethyl)pyridine
5-(Difluoromethyl)-4-nitro-2-(trifluoromethoxy)-3-(trifluoromethyl)pyridine