5-Bromo-3-(difluoromethyl)-2-nitro-4-(trifluoromethoxy)pyridine
6-Bromo-3-nitro-4-(trifluoromethoxy)pyridine-2-sulfonyl chloride
5-Bromo-4-(difluoromethyl)-2-nitro-3-(trifluoromethoxy)pyridine
6-Bromo-4-nitro-3-(trifluoromethoxy)pyridine-2-sulfonyl chloride