3-Bromo-6-(difluoromethyl)-2-nitro-5-(trifluoromethyl)pyridine
5-Bromo-2-(difluoromethyl)-4-nitro-3-(trifluoromethyl)pyridine
5-Bromo-2-(difluoromethyl)-3-nitro-4-(trifluoromethyl)pyridine
6-Bromo-3-(difluoromethyl)-2-(trifluoromethyl)pyridine-4-acetonitrile