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