2-Bromo-3-methyl-5-(trifluoromethoxy)pyridine-6-carboxaldehyde
6-Bromo-2-(difluoromethyl)-3-nitro-4-(trifluoromethoxy)pyridine
4-Bromo-2-(fluoromethyl)-6-nitro-3-(trifluoromethoxy)pyridine
3-Bromo-5-(fluoromethyl)-6-nitro-2-(trifluoromethoxy)pyridine