Name: Isopropylamino-[p-(2-methoxyethyl)phenoxyl]-2-propane-(L-Tartaric acid) Prepared by a new and easy method. Metoprolol Tartarate is the active constituent of Betalock drug, It has many therapeutic actions including: Antihypertensive, reduce the risk of cardiovascular diseases as arrhythmia and coronary heart diseases mortality rate, moreover in the treatment of migraine.