5-(Aminomethyl)-2-(difluoromethyl)-3-methoxypyridine-6-carboxylic acid
5-(Aminomethyl)-2-(difluoromethyl)-3-methoxypyridine-4-carboxylic acid
4-(Aminomethyl)-5-(difluoromethyl)-2-methoxypyridine-3-carboxylic acid
4-(Aminomethyl)-3-(difluoromethyl)-6-methoxypyridine-2-carboxylic acid