4-(Difluoromethyl)-2-nitro-3-(trifluoromethyl)pyridine-5-acetonitrile
3-(Difluoromethyl)-5-nitro-6-(trifluoromethyl)pyridine-2-acetonitrile
Methyl 3-(difluoromethyl)-5-methyl-2-(trifluoromethyl)pyridine-4-acetate
3-(Difluoromethyl)-5-nitro-4-(trifluoromethyl)pyridine-2-acetonitrile