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