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