4-Amino-6-(difluoromethyl)-2-(trifluoromethyl)pyridine-3-acetic acid
4-Bromo-2-chloro-3-(difluoromethyl)-6-(trifluoromethyl)pyridine
5-Bromo-4-(bromomethyl)-2-chloro-3-(difluoromethyl)pyridine
4-Amino-2-(difluoromethyl)-5-(trifluoromethyl)pyridine-3-acetic acid