2-Bromo-6-hydroxy-3-(trifluoromethoxy)pyridine-4-sulfonamide
5-Bromo-3-(difluoromethyl)-2-(trifluoromethoxy)pyridine-4-carboxylic acid
2-Bromo-4-fluoro-3-(trifluoromethoxy)pyridine-5-sulfonamide
3-Bromo-5-(difluoromethyl)-4-(trifluoromethoxy)pyridine-2-carboxylic acid