Methyl 4-amino-3-chloro-2-(difluoromethyl)pyridine-5-carboxylate
2-Amino-5-chloro-6-(difluoromethyl)pyridine-3-carboxylic acid
2-Amino-5-chloro-4-(difluoromethyl)pyridine-3-carboxylic acid
6-Amino-4-chloro-2-(difluoromethyl)pyridine-3-carboxylic acid