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