6-Bromo-3-cyano-4-(trifluoromethoxy)pyridine-2-carboxylic acid
3-Bromo-4-(difluoromethyl)-6-hydroxy-2-(trifluoromethoxy)pyridine
2-Bromo-4-cyano-3-(trifluoromethoxy)pyridine-5-carboxylic acid
4-Bromo-6-cyano-2-(trifluoromethoxy)pyridine-3-acetic acid