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