4-Amino-2-(bromomethyl)-3-(difluoromethyl)pyridine-6-carboxylic acid
6-Amino-2-(bromomethyl)-3-(difluoromethyl)pyridine-4-carboxylic acid
4-Amino-2-(bromomethyl)-3-(difluoromethyl)pyridine-6-methanol
3-Amino-5-(bromomethyl)-6-(difluoromethyl)pyridine-2-carboxylic acid