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