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