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