3-Bromo-6-cyano-2-(trifluoromethoxy)pyridine-5-carboxylic acid
3-Bromo-6-chloro-4-(fluoromethyl)-2-(trifluoromethoxy)pyridine
5-Bromo-2-chloro-3-(fluoromethyl)-4-(trifluoromethoxy)pyridine
4-Bromo-3-cyano-6-(trifluoromethoxy)pyridine-2-carboxylic acid