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