Ethyl 2-amino-6-(bromomethyl)-4-(difluoromethyl)pyridine-3-carboxylate
2-Amino-6-(bromomethyl)-3-(difluoromethyl)pyridine-5-carboxylic acid
Ethyl 2-amino-5-(bromomethyl)-6-(difluoromethyl)pyridine-3-carboxylate
6-Amino-3-(bromomethyl)-2-(difluoromethyl)pyridine-4-carboxylic acid