3-Bromo-4-nitro-5-(trifluoromethoxy)pyridine-2-carboxylic acid
3-Bromo-2-(difluoromethyl)-5-iodo-6-(trifluoromethoxy)pyridine
3-Bromo-2-(difluoromethyl)-4-iodo-5-(trifluoromethoxy)pyridine
4-Bromo-2-hydroxy-3-(trifluoromethoxy)pyridine-5-acetonitrile