A hydrochloride salt of Etilefrine, which is an antihypotensive drug. It is a stimulator of both α and β adrenergic receptors. This Sympathomimetic agent is used for treatment of neurological, cardiovascular, endocrine or metabolic origin orthostatic hypotension. . Reference standards of Etilefrine Hydrochloride API, and its pharmacopeial, non pharmacopeial impurities, and stable isotopes are listed below.