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