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