6-Cyano-2-(difluoromethyl)-4-methoxypyridine-3-carboxylic acid
2-Cyano-6-(difluoromethyl)-3-methoxypyridine-4-carboxylic acid
4-(Aminomethyl)-6-hydroxy-3-(trifluoromethoxy)pyridine-2-carboxylic acid
4-(Aminomethyl)-3-hydroxy-6-(trifluoromethoxy)pyridine-2-carboxylic acid