thiopental

Sodium thiopental, also known as Sodium Pentothal (a trademark of Abbott Laboratories, not to be confused with pentobarbital), thiopental, thiopentone, or Trapanal (also a trademark), is a rapid-onset short-acting barbiturate general anesthetic that is an analogue of thiobarbital. Sodium thiopental is a core medicine in the World Health Organization's "Essential Drugs List", which is a list of minimum medical needs for a basic healthcare system. It was previously the first of three drugs administered during most lethal injections in the United States, but the U.S. manufacturer Hospira stopped manufacturing the drug and the EU banned the export of the drug for this purpose.