4-Bromo-2-(difluoromethyl)-3-(trifluoromethoxy)pyridine-6-acetonitrile
2-Bromo-5-fluoro-3-(trifluoromethoxy)pyridine-6-acetic acid
3-Bromo-5-(difluoromethyl)-6-(trifluoromethoxy)pyridine-2-acetonitrile
2-Bromo-4-fluoro-6-(trifluoromethoxy)pyridine-3-acetic acid