6-Methyl-4-nitro-3-(trifluoromethoxy)pyridine-2-acetonitrile
3-(Difluoromethyl)-4-methoxy-2-(trifluoromethoxy)pyridine-5-acetonitrile
4-Methyl-5-nitro-3-(trifluoromethoxy)-2-(trifluoromethyl)pyridine
3-(Difluoromethyl)-2-methoxy-4-(trifluoromethoxy)pyridine-5-acetonitrile