4-Bromo-3-nitro-5-(trifluoromethoxy)pyridine-2-sulfonamide
Methyl 3-bromo-5-(chloromethyl)-4-(trifluoromethoxy)pyridine-2-carboxylate
4-Bromo-6-nitro-2-(trifluoromethoxy)pyridine-3-sulfonamide
4-Chloro-2-(difluoromethyl)-3-fluoro-6-(trifluoromethoxy)pyridine