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