2-Bromo-5-cyano-3-(trifluoromethoxy)pyridine-4-acetic acid
6-Amino-4-(difluoromethyl)-2-(trifluoromethoxy)pyridine-3-acetic acid
5-Bromo-2-chloro-3-(trifluoromethoxy)pyridine-6-acetonitrile
4-Bromo-3-chloro-6-(trifluoromethoxy)pyridine-2-acetonitrile