A short-acting hypnotic-sedative drug with anxiolytic and amnestic properties. It
is used in dentistry, cardiac surgery, endoscopic procedures, as preanesthetic medication,
and as an adjunct to local anesthesia. The short duration and cardiorespiratory stability
makes it useful in poor-risk, elderly, and cardiac patients. It is water-soluble at
pH less than 4 and lipid-soluble at physiological pH