4-Bromo-2-(difluoromethyl)-5-(trifluoromethoxy)pyridine-3-acetic acid
5-Bromo-3-(difluoromethyl)-2-(trifluoromethoxy)pyridine-4-acetic acid
3-Chloro-5-hydroxy-2-iodo-6-(trifluoromethoxy)pyridine
3-Bromo-5-(difluoromethyl)-4-(trifluoromethoxy)pyridine-2-acetic acid