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