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