2-(Aminomethyl)-5-(difluoromethyl)-3-methylpyridine-6-acetic acid
2-(Aminomethyl)-5-(difluoromethyl)-3-methylpyridine-4-acetic acid
2-(Aminomethyl)-4-(difluoromethyl)-6-methylpyridine-3-acetic acid
6-(Aminomethyl)-4-(difluoromethyl)-3-methylpyridine-2-acetic acid