3-Amino-6-chloro-2-(difluoromethyl)pyridine-5-carboxylic acid
4-Amino-3-chloro-6-(difluoromethyl)pyridine-2-carboxylic acid
3-(Aminomethyl)-5-hydroxy-4-(trifluoromethoxy)pyridine-2-carboxylic acid
5-(Aminomethyl)-4-hydroxy-2-(trifluoromethoxy)pyridine-3-carboxylic acid